Home / 8,578.32-12,866.20-3,387.76

Finding the Fourth Proportional to 8,578.32, 12,866.20 and 3,387.76

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Solution

The fourth proportional to 8,578.32, 12,866.20 and 3,387.76 is: 5,081.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.32 : 12,866.20 = 3,387.76 : x
  2. Step 2: Convert to fraction form
    8,578.32/12,866.20 = 3,387.76/x
  3. Step 3: Cross multiply
    8,578.32x = 12,866.20 × 3,387.76
  4. Step 4: Simplify right side
    8,578.32x = 43,587,597.71
  5. Step 5: Solve for x
    x = 43,587,597.71/8,578.32
  6. Step 6: Final answer
    x = 5,081.13

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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.