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Finding the Fourth Proportional to 8,599.91, 12,902.10 and 2,978.75

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Solution

The fourth proportional to 8,599.91, 12,902.10 and 2,978.75 is: 4,468.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,599.91 : 12,902.10 = 2,978.75 : x
  2. Step 2: Convert to fraction form
    8,599.91/12,902.10 = 2,978.75/x
  3. Step 3: Cross multiply
    8,599.91x = 12,902.10 × 2,978.75
  4. Step 4: Simplify right side
    8,599.91x = 38,432,130.38
  5. Step 5: Solve for x
    x = 38,432,130.38/8,599.91
  6. Step 6: Final answer
    x = 4,468.90

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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.