Home / 2,909.31-4,013.01-1,729.50

Finding the Fourth Proportional to 2,909.31, 4,013.01 and 1,729.50

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Solution

The fourth proportional to 2,909.31, 4,013.01 and 1,729.50 is: 2,385.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.31 : 4,013.01 = 1,729.50 : x
  2. Step 2: Convert to fraction form
    2,909.31/4,013.01 = 1,729.50/x
  3. Step 3: Cross multiply
    2,909.31x = 4,013.01 × 1,729.50
  4. Step 4: Simplify right side
    2,909.31x = 6,940,500.80
  5. Step 5: Solve for x
    x = 6,940,500.80/2,909.31
  6. Step 6: Final answer
    x = 2,385.62

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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.