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Finding the Fourth Proportional to 3,861.59, 5,792.36 and 1,264.50

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Solution

The fourth proportional to 3,861.59, 5,792.36 and 1,264.50 is: 1,896.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.59 : 5,792.36 = 1,264.50 : x
  2. Step 2: Convert to fraction form
    3,861.59/5,792.36 = 1,264.50/x
  3. Step 3: Cross multiply
    3,861.59x = 5,792.36 × 1,264.50
  4. Step 4: Simplify right side
    3,861.59x = 7,324,432.90
  5. Step 5: Solve for x
    x = 7,324,432.90/3,861.59
  6. Step 6: Final answer
    x = 1,896.74

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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.