Home / 8,780.80-13,171.52-2,625.28

Finding the Fourth Proportional to 8,780.80, 13,171.52 and 2,625.28

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Solution

The fourth proportional to 8,780.80, 13,171.52 and 2,625.28 is: 3,938.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.80 : 13,171.52 = 2,625.28 : x
  2. Step 2: Convert to fraction form
    8,780.80/13,171.52 = 2,625.28/x
  3. Step 3: Cross multiply
    8,780.80x = 13,171.52 × 2,625.28
  4. Step 4: Simplify right side
    8,780.80x = 34,578,928.03
  5. Step 5: Solve for x
    x = 34,578,928.03/8,780.80
  6. Step 6: Final answer
    x = 3,938.02

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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.