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Finding the Fourth Proportional to 3,947.31, 5,921.01 and 1,136.13

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Solution

The fourth proportional to 3,947.31, 5,921.01 and 1,136.13 is: 1,704.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,947.31 : 5,921.01 = 1,136.13 : x
  2. Step 2: Convert to fraction form
    3,947.31/5,921.01 = 1,136.13/x
  3. Step 3: Cross multiply
    3,947.31x = 5,921.01 × 1,136.13
  4. Step 4: Simplify right side
    3,947.31x = 6,727,037.09
  5. Step 5: Solve for x
    x = 6,727,037.09/3,947.31
  6. Step 6: Final answer
    x = 1,704.21

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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.