Home / 3,729.28-5,561.39-3,309.70

Finding the Fourth Proportional to 3,729.28, 5,561.39 and 3,309.70

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Solution

The fourth proportional to 3,729.28, 5,561.39 and 3,309.70 is: 4,935.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.28 : 5,561.39 = 3,309.70 : x
  2. Step 2: Convert to fraction form
    3,729.28/5,561.39 = 3,309.70/x
  3. Step 3: Cross multiply
    3,729.28x = 5,561.39 × 3,309.70
  4. Step 4: Simplify right side
    3,729.28x = 18,406,532.48
  5. Step 5: Solve for x
    x = 18,406,532.48/3,729.28
  6. Step 6: Final answer
    x = 4,935.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.