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Finding the Fourth Proportional to 2,486.88, 3,432.61 and 1,658.88

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Solution

The fourth proportional to 2,486.88, 3,432.61 and 1,658.88 is: 2,289.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.88 : 3,432.61 = 1,658.88 : x
  2. Step 2: Convert to fraction form
    2,486.88/3,432.61 = 1,658.88/x
  3. Step 3: Cross multiply
    2,486.88x = 3,432.61 × 1,658.88
  4. Step 4: Simplify right side
    2,486.88x = 5,694,288.08
  5. Step 5: Solve for x
    x = 5,694,288.08/2,486.88
  6. Step 6: Final answer
    x = 2,289.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.