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Finding the Fourth Proportional to 8,341.76, 12,514.40 and 3,147.52

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Solution

The fourth proportional to 8,341.76, 12,514.40 and 3,147.52 is: 4,721.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,341.76 : 12,514.40 = 3,147.52 : x
  2. Step 2: Convert to fraction form
    8,341.76/12,514.40 = 3,147.52/x
  3. Step 3: Cross multiply
    8,341.76x = 12,514.40 × 3,147.52
  4. Step 4: Simplify right side
    8,341.76x = 39,389,324.29
  5. Step 5: Solve for x
    x = 39,389,324.29/8,341.76
  6. Step 6: Final answer
    x = 4,721.94

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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.