Home / 9,620.97-13,275.05-5,428.41

Finding the Fourth Proportional to 9,620.97, 13,275.05 and 5,428.41

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Solution

The fourth proportional to 9,620.97, 13,275.05 and 5,428.41 is: 7,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,620.97 : 13,275.05 = 5,428.41 : x
  2. Step 2: Convert to fraction form
    9,620.97/13,275.05 = 5,428.41/x
  3. Step 3: Cross multiply
    9,620.97x = 13,275.05 × 5,428.41
  4. Step 4: Simplify right side
    9,620.97x = 72,062,414.17
  5. Step 5: Solve for x
    x = 72,062,414.17/9,620.97
  6. Step 6: Final answer
    x = 7,490.14

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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.