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Finding the Fourth Proportional to 8,378.67, 12,568.10 and 2,535.52

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Solution

The fourth proportional to 8,378.67, 12,568.10 and 2,535.52 is: 3,803.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.67 : 12,568.10 = 2,535.52 : x
  2. Step 2: Convert to fraction form
    8,378.67/12,568.10 = 2,535.52/x
  3. Step 3: Cross multiply
    8,378.67x = 12,568.10 × 2,535.52
  4. Step 4: Simplify right side
    8,378.67x = 31,866,668.91
  5. Step 5: Solve for x
    x = 31,866,668.91/8,378.67
  6. Step 6: Final answer
    x = 3,803.31

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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.