Home / 1,972.71-2,721.45-1,133.21

Finding the Fourth Proportional to 1,972.71, 2,721.45 and 1,133.21

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Solution

The fourth proportional to 1,972.71, 2,721.45 and 1,133.21 is: 1,563.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.71 : 2,721.45 = 1,133.21 : x
  2. Step 2: Convert to fraction form
    1,972.71/2,721.45 = 1,133.21/x
  3. Step 3: Cross multiply
    1,972.71x = 2,721.45 × 1,133.21
  4. Step 4: Simplify right side
    1,972.71x = 3,083,974.35
  5. Step 5: Solve for x
    x = 3,083,974.35/1,972.71
  6. Step 6: Final answer
    x = 1,563.32

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1.5x scale

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.