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Finding the Fourth Proportional to 7,338.70, 11,008.10 and 5,157.17

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Solution

The fourth proportional to 7,338.70, 11,008.10 and 5,157.17 is: 7,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,338.70 : 11,008.10 = 5,157.17 : x
  2. Step 2: Convert to fraction form
    7,338.70/11,008.10 = 5,157.17/x
  3. Step 3: Cross multiply
    7,338.70x = 11,008.10 × 5,157.17
  4. Step 4: Simplify right side
    7,338.70x = 56,770,642.21
  5. Step 5: Solve for x
    x = 56,770,642.21/7,338.70
  6. Step 6: Final answer
    x = 7,735.79

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Similar ratio
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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.