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Finding the Fourth Proportional to 3,861.65, 5,792.87 and 1,264.79

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Solution

The fourth proportional to 3,861.65, 5,792.87 and 1,264.79 is: 1,897.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.65 : 5,792.87 = 1,264.79 : x
  2. Step 2: Convert to fraction form
    3,861.65/5,792.87 = 1,264.79/x
  3. Step 3: Cross multiply
    3,861.65x = 5,792.87 × 1,264.79
  4. Step 4: Simplify right side
    3,861.65x = 7,326,738.24
  5. Step 5: Solve for x
    x = 7,326,738.24/3,861.65
  6. Step 6: Final answer
    x = 1,897.31

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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.