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Finding the Fourth Proportional to 3,702.43, 5,108.02 and 2,130.22

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Solution

The fourth proportional to 3,702.43, 5,108.02 and 2,130.22 is: 2,938.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.43 : 5,108.02 = 2,130.22 : x
  2. Step 2: Convert to fraction form
    3,702.43/5,108.02 = 2,130.22/x
  3. Step 3: Cross multiply
    3,702.43x = 5,108.02 × 2,130.22
  4. Step 4: Simplify right side
    3,702.43x = 10,881,206.36
  5. Step 5: Solve for x
    x = 10,881,206.36/3,702.43
  6. Step 6: Final answer
    x = 2,938.94

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Find fourth proportional to 1,851.22, 2,554.01 and 1,065.11
Half scale
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Double scale
Find fourth proportional to 3,703.43, 5,109.40 and 2,131.22
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.