Home / 3,702.34-5,109.15-2,130.76

Finding the Fourth Proportional to 3,702.34, 5,109.15 and 2,130.76

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Solution

The fourth proportional to 3,702.34, 5,109.15 and 2,130.76 is: 2,940.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.34 : 5,109.15 = 2,130.76 : x
  2. Step 2: Convert to fraction form
    3,702.34/5,109.15 = 2,130.76/x
  3. Step 3: Cross multiply
    3,702.34x = 5,109.15 × 2,130.76
  4. Step 4: Simplify right side
    3,702.34x = 10,886,372.45
  5. Step 5: Solve for x
    x = 10,886,372.45/3,702.34
  6. Step 6: Final answer
    x = 2,940.40

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Half scale
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Double scale
Find fourth proportional to 3,703.34, 5,110.53 and 2,131.76
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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.