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Finding the Fourth Proportional to 3,124.92, 4,684.12 and 1,479.51

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Solution

The fourth proportional to 3,124.92, 4,684.12 and 1,479.51 is: 2,217.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,124.92 : 4,684.12 = 1,479.51 : x
  2. Step 2: Convert to fraction form
    3,124.92/4,684.12 = 1,479.51/x
  3. Step 3: Cross multiply
    3,124.92x = 4,684.12 × 1,479.51
  4. Step 4: Simplify right side
    3,124.92x = 6,930,202.38
  5. Step 5: Solve for x
    x = 6,930,202.38/3,124.92
  6. Step 6: Final answer
    x = 2,217.72

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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.