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Finding the Fourth Proportional to 7,397.92, 10,210.40 and 7,065.76

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Solution

The fourth proportional to 7,397.92, 10,210.40 and 7,065.76 is: 9,751.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,397.92 : 10,210.40 = 7,065.76 : x
  2. Step 2: Convert to fraction form
    7,397.92/10,210.40 = 7,065.76/x
  3. Step 3: Cross multiply
    7,397.92x = 10,210.40 × 7,065.76
  4. Step 4: Simplify right side
    7,397.92x = 72,144,235.90
  5. Step 5: Solve for x
    x = 72,144,235.90/7,397.92
  6. Step 6: Final answer
    x = 9,751.96

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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.