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Finding the Fourth Proportional to 8,780.70, 13,169.75 and 3,232.75

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Solution

The fourth proportional to 8,780.70, 13,169.75 and 3,232.75 is: 4,848.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.70 : 13,169.75 = 3,232.75 : x
  2. Step 2: Convert to fraction form
    8,780.70/13,169.75 = 3,232.75/x
  3. Step 3: Cross multiply
    8,780.70x = 13,169.75 × 3,232.75
  4. Step 4: Simplify right side
    8,780.70x = 42,574,509.31
  5. Step 5: Solve for x
    x = 42,574,509.31/8,780.70
  6. Step 6: Final answer
    x = 4,848.65

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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.