Home / 8,780.28-13,171.80-3,232.40

Finding the Fourth Proportional to 8,780.28, 13,171.80 and 3,232.40

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Solution

The fourth proportional to 8,780.28, 13,171.80 and 3,232.40 is: 4,849.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.28 : 13,171.80 = 3,232.40 : x
  2. Step 2: Convert to fraction form
    8,780.28/13,171.80 = 3,232.40/x
  3. Step 3: Cross multiply
    8,780.28x = 13,171.80 × 3,232.40
  4. Step 4: Simplify right side
    8,780.28x = 42,576,526.32
  5. Step 5: Solve for x
    x = 42,576,526.32/8,780.28
  6. Step 6: Final answer
    x = 4,849.11

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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.