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Finding the Fourth Proportional to 8,602.13, 12,903.18 and 5,679.75

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Solution

The fourth proportional to 8,602.13, 12,903.18 and 5,679.75 is: 8,519.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,602.13 : 12,903.18 = 5,679.75 : x
  2. Step 2: Convert to fraction form
    8,602.13/12,903.18 = 5,679.75/x
  3. Step 3: Cross multiply
    8,602.13x = 12,903.18 × 5,679.75
  4. Step 4: Simplify right side
    8,602.13x = 73,286,836.61
  5. Step 5: Solve for x
    x = 73,286,836.61/8,602.13
  6. Step 6: Final answer
    x = 8,519.62

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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.