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Finding the Fourth Proportional to 2,479.26, 3,718.98 and 630.42

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Solution

The fourth proportional to 2,479.26, 3,718.98 and 630.42 is: 945.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.26 : 3,718.98 = 630.42 : x
  2. Step 2: Convert to fraction form
    2,479.26/3,718.98 = 630.42/x
  3. Step 3: Cross multiply
    2,479.26x = 3,718.98 × 630.42
  4. Step 4: Simplify right side
    2,479.26x = 2,344,505.43
  5. Step 5: Solve for x
    x = 2,344,505.43/2,479.26
  6. Step 6: Final answer
    x = 945.65

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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.