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Finding the Fourth Proportional to 3,239.80, 4,470.72 and 1,823.24

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Solution

The fourth proportional to 3,239.80, 4,470.72 and 1,823.24 is: 2,515.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.80 : 4,470.72 = 1,823.24 : x
  2. Step 2: Convert to fraction form
    3,239.80/4,470.72 = 1,823.24/x
  3. Step 3: Cross multiply
    3,239.80x = 4,470.72 × 1,823.24
  4. Step 4: Simplify right side
    3,239.80x = 8,151,195.53
  5. Step 5: Solve for x
    x = 8,151,195.53/3,239.80
  6. Step 6: Final answer
    x = 2,515.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.