Home / 3,861.27-5,787.45-1,667.79

Finding the Fourth Proportional to 3,861.27, 5,787.45 and 1,667.79

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Solution

The fourth proportional to 3,861.27, 5,787.45 and 1,667.79 is: 2,499.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.27 : 5,787.45 = 1,667.79 : x
  2. Step 2: Convert to fraction form
    3,861.27/5,787.45 = 1,667.79/x
  3. Step 3: Cross multiply
    3,861.27x = 5,787.45 × 1,667.79
  4. Step 4: Simplify right side
    3,861.27x = 9,652,251.24
  5. Step 5: Solve for x
    x = 9,652,251.24/3,861.27
  6. Step 6: Final answer
    x = 2,499.76

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1.5x scale

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.