Home / 2,154.26-3,231.32-615.26

Finding the Fourth Proportional to 2,154.26, 3,231.32 and 615.26

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Solution

The fourth proportional to 2,154.26, 3,231.32 and 615.26 is: 922.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.26 : 3,231.32 = 615.26 : x
  2. Step 2: Convert to fraction form
    2,154.26/3,231.32 = 615.26/x
  3. Step 3: Cross multiply
    2,154.26x = 3,231.32 × 615.26
  4. Step 4: Simplify right side
    2,154.26x = 1,988,082.71
  5. Step 5: Solve for x
    x = 1,988,082.71/2,154.26
  6. Step 6: Final answer
    x = 922.86

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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.