Home / 1,972.08-2,721.13-1,133.06

Finding the Fourth Proportional to 1,972.08, 2,721.13 and 1,133.06

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Solution

The fourth proportional to 1,972.08, 2,721.13 and 1,133.06 is: 1,563.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,972.08 : 2,721.13 = 1,133.06 : x
  2. Step 2: Convert to fraction form
    1,972.08/2,721.13 = 1,133.06/x
  3. Step 3: Cross multiply
    1,972.08x = 2,721.13 × 1,133.06
  4. Step 4: Simplify right side
    1,972.08x = 3,083,187.12
  5. Step 5: Solve for x
    x = 3,083,187.12/1,972.08
  6. Step 6: Final answer
    x = 1,563.42

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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.