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Finding the Fourth Proportional to 6,479.62, 9,719.79 and 1,862.50

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Solution

The fourth proportional to 6,479.62, 9,719.79 and 1,862.50 is: 2,793.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.62 : 9,719.79 = 1,862.50 : x
  2. Step 2: Convert to fraction form
    6,479.62/9,719.79 = 1,862.50/x
  3. Step 3: Cross multiply
    6,479.62x = 9,719.79 × 1,862.50
  4. Step 4: Simplify right side
    6,479.62x = 18,103,108.88
  5. Step 5: Solve for x
    x = 18,103,108.88/6,479.62
  6. Step 6: Final answer
    x = 2,793.85

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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.