Home / 1,972.56-2,721.17-1,308.57

Finding the Fourth Proportional to 1,972.56, 2,721.17 and 1,308.57

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Solution

The fourth proportional to 1,972.56, 2,721.17 and 1,308.57 is: 1,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.56 : 2,721.17 = 1,308.57 : x
  2. Step 2: Convert to fraction form
    1,972.56/2,721.17 = 1,308.57/x
  3. Step 3: Cross multiply
    1,972.56x = 2,721.17 × 1,308.57
  4. Step 4: Simplify right side
    1,972.56x = 3,560,834.49
  5. Step 5: Solve for x
    x = 3,560,834.49/1,972.56
  6. Step 6: Final answer
    x = 1,805.18

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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.