Home / 3,613.20-4,989.03-2,772.57

Finding the Fourth Proportional to 3,613.20, 4,989.03 and 2,772.57

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Solution

The fourth proportional to 3,613.20, 4,989.03 and 2,772.57 is: 3,828.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,613.20 : 4,989.03 = 2,772.57 : x
  2. Step 2: Convert to fraction form
    3,613.20/4,989.03 = 2,772.57/x
  3. Step 3: Cross multiply
    3,613.20x = 4,989.03 × 2,772.57
  4. Step 4: Simplify right side
    3,613.20x = 13,832,434.91
  5. Step 5: Solve for x
    x = 13,832,434.91/3,613.20
  6. Step 6: Final answer
    x = 3,828.31

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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.