Home / 3,115.20-4,673.28-1,472.64

Finding the Fourth Proportional to 3,115.20, 4,673.28 and 1,472.64

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Solution

The fourth proportional to 3,115.20, 4,673.28 and 1,472.64 is: 2,209.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.20 : 4,673.28 = 1,472.64 : x
  2. Step 2: Convert to fraction form
    3,115.20/4,673.28 = 1,472.64/x
  3. Step 3: Cross multiply
    3,115.20x = 4,673.28 × 1,472.64
  4. Step 4: Simplify right side
    3,115.20x = 6,882,059.06
  5. Step 5: Solve for x
    x = 6,882,059.06/3,115.20
  6. Step 6: Final answer
    x = 2,209.19

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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.