Home / 1,537.97-2,122.40-839.34

Finding the Fourth Proportional to 1,537.97, 2,122.40 and 839.34

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Solution

The fourth proportional to 1,537.97, 2,122.40 and 839.34 is: 1,158.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.97 : 2,122.40 = 839.34 : x
  2. Step 2: Convert to fraction form
    1,537.97/2,122.40 = 839.34/x
  3. Step 3: Cross multiply
    1,537.97x = 2,122.40 × 839.34
  4. Step 4: Simplify right side
    1,537.97x = 1,781,411.02
  5. Step 5: Solve for x
    x = 1,781,411.02/1,537.97
  6. Step 6: Final answer
    x = 1,158.29

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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.