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Finding the Fourth Proportional to 3,561.97, 5,343.11 and 964.91

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Solution

The fourth proportional to 3,561.97, 5,343.11 and 964.91 is: 1,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.97 : 5,343.11 = 964.91 : x
  2. Step 2: Convert to fraction form
    3,561.97/5,343.11 = 964.91/x
  3. Step 3: Cross multiply
    3,561.97x = 5,343.11 × 964.91
  4. Step 4: Simplify right side
    3,561.97x = 5,155,588.73
  5. Step 5: Solve for x
    x = 5,155,588.73/3,561.97
  6. Step 6: Final answer
    x = 1,447.40

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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.