Home / 8,290.13-12,432.56-2,742.44

Finding the Fourth Proportional to 8,290.13, 12,432.56 and 2,742.44

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Solution

The fourth proportional to 8,290.13, 12,432.56 and 2,742.44 is: 4,112.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,290.13 : 12,432.56 = 2,742.44 : x
  2. Step 2: Convert to fraction form
    8,290.13/12,432.56 = 2,742.44/x
  3. Step 3: Cross multiply
    8,290.13x = 12,432.56 × 2,742.44
  4. Step 4: Simplify right side
    8,290.13x = 34,095,494.54
  5. Step 5: Solve for x
    x = 34,095,494.54/8,290.13
  6. Step 6: Final answer
    x = 4,112.78

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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.