Home / 8,387.90-12,583.37-3,454.80

Finding the Fourth Proportional to 8,387.90, 12,583.37 and 3,454.80

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Solution

The fourth proportional to 8,387.90, 12,583.37 and 3,454.80 is: 5,182.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.90 : 12,583.37 = 3,454.80 : x
  2. Step 2: Convert to fraction form
    8,387.90/12,583.37 = 3,454.80/x
  3. Step 3: Cross multiply
    8,387.90x = 12,583.37 × 3,454.80
  4. Step 4: Simplify right side
    8,387.90x = 43,473,026.68
  5. Step 5: Solve for x
    x = 43,473,026.68/8,387.90
  6. Step 6: Final answer
    x = 5,182.83

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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.