Home / 3,239.50-4,470.33-1,912.90

Finding the Fourth Proportional to 3,239.50, 4,470.33 and 1,912.90

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Solution

The fourth proportional to 3,239.50, 4,470.33 and 1,912.90 is: 2,639.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,239.50 : 4,470.33 = 1,912.90 : x
  2. Step 2: Convert to fraction form
    3,239.50/4,470.33 = 1,912.90/x
  3. Step 3: Cross multiply
    3,239.50x = 4,470.33 × 1,912.90
  4. Step 4: Simplify right side
    3,239.50x = 8,551,294.26
  5. Step 5: Solve for x
    x = 8,551,294.26/3,239.50
  6. Step 6: Final answer
    x = 2,639.70

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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.