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Finding the Fourth Proportional to 7,199.28, 9,934.29 and 5,311.89

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Solution

The fourth proportional to 7,199.28, 9,934.29 and 5,311.89 is: 7,329.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,199.28 : 9,934.29 = 5,311.89 : x
  2. Step 2: Convert to fraction form
    7,199.28/9,934.29 = 5,311.89/x
  3. Step 3: Cross multiply
    7,199.28x = 9,934.29 × 5,311.89
  4. Step 4: Simplify right side
    7,199.28x = 52,769,855.71
  5. Step 5: Solve for x
    x = 52,769,855.71/7,199.28
  6. Step 6: Final answer
    x = 7,329.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.