Home / 9,711.29-13,397.67-5,620.40

Finding the Fourth Proportional to 9,711.29, 13,397.67 and 5,620.40

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Solution

The fourth proportional to 9,711.29, 13,397.67 and 5,620.40 is: 7,753.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,711.29 : 13,397.67 = 5,620.40 : x
  2. Step 2: Convert to fraction form
    9,711.29/13,397.67 = 5,620.40/x
  3. Step 3: Cross multiply
    9,711.29x = 13,397.67 × 5,620.40
  4. Step 4: Simplify right side
    9,711.29x = 75,300,323.08
  5. Step 5: Solve for x
    x = 75,300,323.08/9,711.29
  6. Step 6: Final answer
    x = 7,753.89

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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.