Home / 1,537.85-2,122.23-839.22

Finding the Fourth Proportional to 1,537.85, 2,122.23 and 839.22

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Solution

The fourth proportional to 1,537.85, 2,122.23 and 839.22 is: 1,158.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,537.85 : 2,122.23 = 839.22 : x
  2. Step 2: Convert to fraction form
    1,537.85/2,122.23 = 839.22/x
  3. Step 3: Cross multiply
    1,537.85x = 2,122.23 × 839.22
  4. Step 4: Simplify right side
    1,537.85x = 1,781,017.86
  5. Step 5: Solve for x
    x = 1,781,017.86/1,537.85
  6. Step 6: Final answer
    x = 1,158.13

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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.