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Finding the Fourth Proportional to 8,658.61, 12,997.10 and 7,034.76

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Solution

The fourth proportional to 8,658.61, 12,997.10 and 7,034.76 is: 10,559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.61 : 12,997.10 = 7,034.76 : x
  2. Step 2: Convert to fraction form
    8,658.61/12,997.10 = 7,034.76/x
  3. Step 3: Cross multiply
    8,658.61x = 12,997.10 × 7,034.76
  4. Step 4: Simplify right side
    8,658.61x = 91,431,444.02
  5. Step 5: Solve for x
    x = 91,431,444.02/8,658.61
  6. Step 6: Final answer
    x = 10,559.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.