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Finding the Fourth Proportional to 11,658.60, 17,482.20 and 3,864.78

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Solution

The fourth proportional to 11,658.60, 17,482.20 and 3,864.78 is: 5,795.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,658.60 : 17,482.20 = 3,864.78 : x
  2. Step 2: Convert to fraction form
    11,658.60/17,482.20 = 3,864.78/x
  3. Step 3: Cross multiply
    11,658.60x = 17,482.20 × 3,864.78
  4. Step 4: Simplify right side
    11,658.60x = 67,564,856.92
  5. Step 5: Solve for x
    x = 67,564,856.92/11,658.60
  6. Step 6: Final answer
    x = 5,795.28

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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.