Home / 3,902.49-5,385.45-2,201.02

Finding the Fourth Proportional to 3,902.49, 5,385.45 and 2,201.02

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Solution

The fourth proportional to 3,902.49, 5,385.45 and 2,201.02 is: 3,037.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,902.49 : 5,385.45 = 2,201.02 : x
  2. Step 2: Convert to fraction form
    3,902.49/5,385.45 = 2,201.02/x
  3. Step 3: Cross multiply
    3,902.49x = 5,385.45 × 2,201.02
  4. Step 4: Simplify right side
    3,902.49x = 11,853,483.16
  5. Step 5: Solve for x
    x = 11,853,483.16/3,902.49
  6. Step 6: Final answer
    x = 3,037.42

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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.