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Finding the Fourth Proportional to 8,642.03, 12,954.61 and 4,689.71

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Solution

The fourth proportional to 8,642.03, 12,954.61 and 4,689.71 is: 7,029.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,642.03 : 12,954.61 = 4,689.71 : x
  2. Step 2: Convert to fraction form
    8,642.03/12,954.61 = 4,689.71/x
  3. Step 3: Cross multiply
    8,642.03x = 12,954.61 × 4,689.71
  4. Step 4: Simplify right side
    8,642.03x = 60,753,353.73
  5. Step 5: Solve for x
    x = 60,753,353.73/8,642.03
  6. Step 6: Final answer
    x = 7,029.99

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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.