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Finding the Fourth Proportional to 11,452.68, 15,799.80 and 7,200.78

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Solution

The fourth proportional to 11,452.68, 15,799.80 and 7,200.78 is: 9,934.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,452.68 : 15,799.80 = 7,200.78 : x
  2. Step 2: Convert to fraction form
    11,452.68/15,799.80 = 7,200.78/x
  3. Step 3: Cross multiply
    11,452.68x = 15,799.80 × 7,200.78
  4. Step 4: Simplify right side
    11,452.68x = 113,770,883.84
  5. Step 5: Solve for x
    x = 113,770,883.84/11,452.68
  6. Step 6: Final answer
    x = 9,934.00

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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.