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Finding the Fourth Proportional to 4,659.67, 6,990.18 and 1,538.61

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Solution

The fourth proportional to 4,659.67, 6,990.18 and 1,538.61 is: 2,308.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,659.67 : 6,990.18 = 1,538.61 : x
  2. Step 2: Convert to fraction form
    4,659.67/6,990.18 = 1,538.61/x
  3. Step 3: Cross multiply
    4,659.67x = 6,990.18 × 1,538.61
  4. Step 4: Simplify right side
    4,659.67x = 10,755,160.85
  5. Step 5: Solve for x
    x = 10,755,160.85/4,659.67
  6. Step 6: Final answer
    x = 2,308.14

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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.