Home / 1,026.28-1,538.37-615.61

Finding the Fourth Proportional to 1,026.28, 1,538.37 and 615.61

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Solution

The fourth proportional to 1,026.28, 1,538.37 and 615.61 is: 922.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.28 : 1,538.37 = 615.61 : x
  2. Step 2: Convert to fraction form
    1,026.28/1,538.37 = 615.61/x
  3. Step 3: Cross multiply
    1,026.28x = 1,538.37 × 615.61
  4. Step 4: Simplify right side
    1,026.28x = 947,035.96
  5. Step 5: Solve for x
    x = 947,035.96/1,026.28
  6. Step 6: Final answer
    x = 922.79

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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.