Home / 1,013.40-1,398.87-733.73

Finding the Fourth Proportional to 1,013.40, 1,398.87 and 733.73

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Solution

The fourth proportional to 1,013.40, 1,398.87 and 733.73 is: 1,012.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013.40 : 1,398.87 = 733.73 : x
  2. Step 2: Convert to fraction form
    1,013.40/1,398.87 = 733.73/x
  3. Step 3: Cross multiply
    1,013.40x = 1,398.87 × 733.73
  4. Step 4: Simplify right side
    1,013.40x = 1,026,385.89
  5. Step 5: Solve for x
    x = 1,026,385.89/1,013.40
  6. Step 6: Final answer
    x = 1,012.81

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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.