Home / 3,423.28-5,129.96-1,861.96

Finding the Fourth Proportional to 3,423.28, 5,129.96 and 1,861.96

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Solution

The fourth proportional to 3,423.28, 5,129.96 and 1,861.96 is: 2,790.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.28 : 5,129.96 = 1,861.96 : x
  2. Step 2: Convert to fraction form
    3,423.28/5,129.96 = 1,861.96/x
  3. Step 3: Cross multiply
    3,423.28x = 5,129.96 × 1,861.96
  4. Step 4: Simplify right side
    3,423.28x = 9,551,780.32
  5. Step 5: Solve for x
    x = 9,551,780.32/3,423.28
  6. Step 6: Final answer
    x = 2,790.24

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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.