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Finding the Fourth Proportional to 8,654.84, 12,981.14 and 3,659.18

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Solution

The fourth proportional to 8,654.84, 12,981.14 and 3,659.18 is: 5,488.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,654.84 : 12,981.14 = 3,659.18 : x
  2. Step 2: Convert to fraction form
    8,654.84/12,981.14 = 3,659.18/x
  3. Step 3: Cross multiply
    8,654.84x = 12,981.14 × 3,659.18
  4. Step 4: Simplify right side
    8,654.84x = 47,500,327.87
  5. Step 5: Solve for x
    x = 47,500,327.87/8,654.84
  6. Step 6: Final answer
    x = 5,488.30

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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.