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Finding the Fourth Proportional to 7,079.72, 9,770.08 and 3,935.92

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Solution

The fourth proportional to 7,079.72, 9,770.08 and 3,935.92 is: 5,431.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,079.72 : 9,770.08 = 3,935.92 : x
  2. Step 2: Convert to fraction form
    7,079.72/9,770.08 = 3,935.92/x
  3. Step 3: Cross multiply
    7,079.72x = 9,770.08 × 3,935.92
  4. Step 4: Simplify right side
    7,079.72x = 38,454,253.27
  5. Step 5: Solve for x
    x = 38,454,253.27/7,079.72
  6. Step 6: Final answer
    x = 5,431.61

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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.