Home / 1,549.26-2,138.50-928.26

Finding the Fourth Proportional to 1,549.26, 2,138.50 and 928.26

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Solution

The fourth proportional to 1,549.26, 2,138.50 and 928.26 is: 1,281.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.26 : 2,138.50 = 928.26 : x
  2. Step 2: Convert to fraction form
    1,549.26/2,138.50 = 928.26/x
  3. Step 3: Cross multiply
    1,549.26x = 2,138.50 × 928.26
  4. Step 4: Simplify right side
    1,549.26x = 1,985,084.01
  5. Step 5: Solve for x
    x = 1,985,084.01/1,549.26
  6. Step 6: Final answer
    x = 1,281.31

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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.