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Finding the Fourth Proportional to 3,972.72, 5,959.11 and 1,199.40

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Solution

The fourth proportional to 3,972.72, 5,959.11 and 1,199.40 is: 1,799.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.72 : 5,959.11 = 1,199.40 : x
  2. Step 2: Convert to fraction form
    3,972.72/5,959.11 = 1,199.40/x
  3. Step 3: Cross multiply
    3,972.72x = 5,959.11 × 1,199.40
  4. Step 4: Simplify right side
    3,972.72x = 7,147,356.53
  5. Step 5: Solve for x
    x = 7,147,356.53/3,972.72
  6. Step 6: Final answer
    x = 1,799.11

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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.