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Finding the Fourth Proportional to 7,482.69, 11,211.89 and 3,972.42

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Solution

The fourth proportional to 7,482.69, 11,211.89 and 3,972.42 is: 5,952.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,482.69 : 11,211.89 = 3,972.42 : x
  2. Step 2: Convert to fraction form
    7,482.69/11,211.89 = 3,972.42/x
  3. Step 3: Cross multiply
    7,482.69x = 11,211.89 × 3,972.42
  4. Step 4: Simplify right side
    7,482.69x = 44,538,316.21
  5. Step 5: Solve for x
    x = 44,538,316.21/7,482.69
  6. Step 6: Final answer
    x = 5,952.18

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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.