Home / 8,488.74-12,730.92-2,642.34

Finding the Fourth Proportional to 8,488.74, 12,730.92 and 2,642.34

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Solution

The fourth proportional to 8,488.74, 12,730.92 and 2,642.34 is: 3,962.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.74 : 12,730.92 = 2,642.34 : x
  2. Step 2: Convert to fraction form
    8,488.74/12,730.92 = 2,642.34/x
  3. Step 3: Cross multiply
    8,488.74x = 12,730.92 × 2,642.34
  4. Step 4: Simplify right side
    8,488.74x = 33,639,419.15
  5. Step 5: Solve for x
    x = 33,639,419.15/8,488.74
  6. Step 6: Final answer
    x = 3,962.83

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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.