Home / 3,902.63-5,385.56-2,134.23

Finding the Fourth Proportional to 3,902.63, 5,385.56 and 2,134.23

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Solution

The fourth proportional to 3,902.63, 5,385.56 and 2,134.23 is: 2,945.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.63 : 5,385.56 = 2,134.23 : x
  2. Step 2: Convert to fraction form
    3,902.63/5,385.56 = 2,134.23/x
  3. Step 3: Cross multiply
    3,902.63x = 5,385.56 × 2,134.23
  4. Step 4: Simplify right side
    3,902.63x = 11,494,013.05
  5. Step 5: Solve for x
    x = 11,494,013.05/3,902.63
  6. Step 6: Final answer
    x = 2,945.20

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Half scale
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Double scale
Find fourth proportional to 3,903.63, 5,386.93 and 2,135.23
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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.