Home / 1,638.04-2,260.56-891.97

Finding the Fourth Proportional to 1,638.04, 2,260.56 and 891.97

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Solution

The fourth proportional to 1,638.04, 2,260.56 and 891.97 is: 1,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,638.04 : 2,260.56 = 891.97 : x
  2. Step 2: Convert to fraction form
    1,638.04/2,260.56 = 891.97/x
  3. Step 3: Cross multiply
    1,638.04x = 2,260.56 × 891.97
  4. Step 4: Simplify right side
    1,638.04x = 2,016,351.70
  5. Step 5: Solve for x
    x = 2,016,351.70/1,638.04
  6. Step 6: Final answer
    x = 1,230.95

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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.