Home / 1,306.32-1,959.12-938.04

Finding the Fourth Proportional to 1,306.32, 1,959.12 and 938.04

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Solution

The fourth proportional to 1,306.32, 1,959.12 and 938.04 is: 1,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306.32 : 1,959.12 = 938.04 : x
  2. Step 2: Convert to fraction form
    1,306.32/1,959.12 = 938.04/x
  3. Step 3: Cross multiply
    1,306.32x = 1,959.12 × 938.04
  4. Step 4: Simplify right side
    1,306.32x = 1,837,732.92
  5. Step 5: Solve for x
    x = 1,837,732.92/1,306.32
  6. Step 6: Final answer
    x = 1,406.80

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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.