Home / 1,013.90-1,398.12-934.52

Finding the Fourth Proportional to 1,013.90, 1,398.12 and 934.52

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Solution

The fourth proportional to 1,013.90, 1,398.12 and 934.52 is: 1,288.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.90 : 1,398.12 = 934.52 : x
  2. Step 2: Convert to fraction form
    1,013.90/1,398.12 = 934.52/x
  3. Step 3: Cross multiply
    1,013.90x = 1,398.12 × 934.52
  4. Step 4: Simplify right side
    1,013.90x = 1,306,571.10
  5. Step 5: Solve for x
    x = 1,306,571.10/1,013.90
  6. Step 6: Final answer
    x = 1,288.66

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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.