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Finding the Fourth Proportional to 8,649.38, 12,964.84 and 3,719.40

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Solution

The fourth proportional to 8,649.38, 12,964.84 and 3,719.40 is: 5,575.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,649.38 : 12,964.84 = 3,719.40 : x
  2. Step 2: Convert to fraction form
    8,649.38/12,964.84 = 3,719.40/x
  3. Step 3: Cross multiply
    8,649.38x = 12,964.84 × 3,719.40
  4. Step 4: Simplify right side
    8,649.38x = 48,221,416.60
  5. Step 5: Solve for x
    x = 48,221,416.60/8,649.38
  6. Step 6: Final answer
    x = 5,575.13

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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.