Home / 8,531.11-12,788.56-2,980.83

Finding the Fourth Proportional to 8,531.11, 12,788.56 and 2,980.83

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Solution

The fourth proportional to 8,531.11, 12,788.56 and 2,980.83 is: 4,468.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,531.11 : 12,788.56 = 2,980.83 : x
  2. Step 2: Convert to fraction form
    8,531.11/12,788.56 = 2,980.83/x
  3. Step 3: Cross multiply
    8,531.11x = 12,788.56 × 2,980.83
  4. Step 4: Simplify right side
    8,531.11x = 38,120,566.60
  5. Step 5: Solve for x
    x = 38,120,566.60/8,531.11
  6. Step 6: Final answer
    x = 4,468.42

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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.