Home / 1,522.38-2,101.07-932.78

Finding the Fourth Proportional to 1,522.38, 2,101.07 and 932.78

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Solution

The fourth proportional to 1,522.38, 2,101.07 and 932.78 is: 1,287.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,522.38 : 2,101.07 = 932.78 : x
  2. Step 2: Convert to fraction form
    1,522.38/2,101.07 = 932.78/x
  3. Step 3: Cross multiply
    1,522.38x = 2,101.07 × 932.78
  4. Step 4: Simplify right side
    1,522.38x = 1,959,836.07
  5. Step 5: Solve for x
    x = 1,959,836.07/1,522.38
  6. Step 6: Final answer
    x = 1,287.35

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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.