Home / 8,780.32-13,171.76-2,540.39

Finding the Fourth Proportional to 8,780.32, 13,171.76 and 2,540.39

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Solution

The fourth proportional to 8,780.32, 13,171.76 and 2,540.39 is: 3,810.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.32 : 13,171.76 = 2,540.39 : x
  2. Step 2: Convert to fraction form
    8,780.32/13,171.76 = 2,540.39/x
  3. Step 3: Cross multiply
    8,780.32x = 13,171.76 × 2,540.39
  4. Step 4: Simplify right side
    8,780.32x = 33,461,407.39
  5. Step 5: Solve for x
    x = 33,461,407.39/8,780.32
  6. Step 6: Final answer
    x = 3,810.96

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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.