Home / 3,861.60-5,787.66-1,667.88

Finding the Fourth Proportional to 3,861.60, 5,787.66 and 1,667.88

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Solution

The fourth proportional to 3,861.60, 5,787.66 and 1,667.88 is: 2,499.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.60 : 5,787.66 = 1,667.88 : x
  2. Step 2: Convert to fraction form
    3,861.60/5,787.66 = 1,667.88/x
  3. Step 3: Cross multiply
    3,861.60x = 5,787.66 × 1,667.88
  4. Step 4: Simplify right side
    3,861.60x = 9,653,122.36
  5. Step 5: Solve for x
    x = 9,653,122.36/3,861.60
  6. Step 6: Final answer
    x = 2,499.77

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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.