Home / 1,972.10-2,721.56-1,132.95

Finding the Fourth Proportional to 1,972.10, 2,721.56 and 1,132.95

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Solution

The fourth proportional to 1,972.10, 2,721.56 and 1,132.95 is: 1,563.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.10 : 2,721.56 = 1,132.95 : x
  2. Step 2: Convert to fraction form
    1,972.10/2,721.56 = 1,132.95/x
  3. Step 3: Cross multiply
    1,972.10x = 2,721.56 × 1,132.95
  4. Step 4: Simplify right side
    1,972.10x = 3,083,385.74
  5. Step 5: Solve for x
    x = 3,083,385.74/1,972.10
  6. Step 6: Final answer
    x = 1,563.51

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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.