Home / 1,701.91-2,551.20-921.17

Finding the Fourth Proportional to 1,701.91, 2,551.20 and 921.17

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Solution

The fourth proportional to 1,701.91, 2,551.20 and 921.17 is: 1,380.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,701.91 : 2,551.20 = 921.17 : x
  2. Step 2: Convert to fraction form
    1,701.91/2,551.20 = 921.17/x
  3. Step 3: Cross multiply
    1,701.91x = 2,551.20 × 921.17
  4. Step 4: Simplify right side
    1,701.91x = 2,350,091.83
  5. Step 5: Solve for x
    x = 2,350,091.83/1,701.91
  6. Step 6: Final answer
    x = 1,380.85

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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.