Home / 3,318.40-4,972.12-2,015.92

Finding the Fourth Proportional to 3,318.40, 4,972.12 and 2,015.92

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Solution

The fourth proportional to 3,318.40, 4,972.12 and 2,015.92 is: 3,020.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.40 : 4,972.12 = 2,015.92 : x
  2. Step 2: Convert to fraction form
    3,318.40/4,972.12 = 2,015.92/x
  3. Step 3: Cross multiply
    3,318.40x = 4,972.12 × 2,015.92
  4. Step 4: Simplify right side
    3,318.40x = 10,023,396.15
  5. Step 5: Solve for x
    x = 10,023,396.15/3,318.40
  6. Step 6: Final answer
    x = 3,020.55

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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.