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Finding the Fourth Proportional to 8,672.60, 13,008.90 and 4,293.14

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Solution

The fourth proportional to 8,672.60, 13,008.90 and 4,293.14 is: 6,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.60 : 13,008.90 = 4,293.14 : x
  2. Step 2: Convert to fraction form
    8,672.60/13,008.90 = 4,293.14/x
  3. Step 3: Cross multiply
    8,672.60x = 13,008.90 × 4,293.14
  4. Step 4: Simplify right side
    8,672.60x = 55,849,028.95
  5. Step 5: Solve for x
    x = 55,849,028.95/8,672.60
  6. Step 6: Final answer
    x = 6,439.71

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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.