Home / 3,861.28-5,791.32-1,264.20

Finding the Fourth Proportional to 3,861.28, 5,791.32 and 1,264.20

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Solution

The fourth proportional to 3,861.28, 5,791.32 and 1,264.20 is: 1,896.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,861.28 : 5,791.32 = 1,264.20 : x
  2. Step 2: Convert to fraction form
    3,861.28/5,791.32 = 1,264.20/x
  3. Step 3: Cross multiply
    3,861.28x = 5,791.32 × 1,264.20
  4. Step 4: Simplify right side
    3,861.28x = 7,321,386.74
  5. Step 5: Solve for x
    x = 7,321,386.74/3,861.28
  6. Step 6: Final answer
    x = 1,896.10

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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.