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Finding the Fourth Proportional to 7,658.08, 10,560.36 and 7,211.61

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Solution

The fourth proportional to 7,658.08, 10,560.36 and 7,211.61 is: 9,944.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,658.08 : 10,560.36 = 7,211.61 : x
  2. Step 2: Convert to fraction form
    7,658.08/10,560.36 = 7,211.61/x
  3. Step 3: Cross multiply
    7,658.08x = 10,560.36 × 7,211.61
  4. Step 4: Simplify right side
    7,658.08x = 76,157,197.78
  5. Step 5: Solve for x
    x = 76,157,197.78/7,658.08
  6. Step 6: Final answer
    x = 9,944.69

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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.