Home / 2,909.76-4,363.92-1,813.56

Finding the Fourth Proportional to 2,909.76, 4,363.92 and 1,813.56

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Solution

The fourth proportional to 2,909.76, 4,363.92 and 1,813.56 is: 2,719.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.76 : 4,363.92 = 1,813.56 : x
  2. Step 2: Convert to fraction form
    2,909.76/4,363.92 = 1,813.56/x
  3. Step 3: Cross multiply
    2,909.76x = 4,363.92 × 1,813.56
  4. Step 4: Simplify right side
    2,909.76x = 7,914,230.76
  5. Step 5: Solve for x
    x = 7,914,230.76/2,909.76
  6. Step 6: Final answer
    x = 2,719.89

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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.