Home / 5,281.23-7,921.29-1,385.13

Finding the Fourth Proportional to 5,281.23, 7,921.29 and 1,385.13

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Solution

The fourth proportional to 5,281.23, 7,921.29 and 1,385.13 is: 2,077.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,281.23 : 7,921.29 = 1,385.13 : x
  2. Step 2: Convert to fraction form
    5,281.23/7,921.29 = 1,385.13/x
  3. Step 3: Cross multiply
    5,281.23x = 7,921.29 × 1,385.13
  4. Step 4: Simplify right side
    5,281.23x = 10,972,016.42
  5. Step 5: Solve for x
    x = 10,972,016.42/5,281.23
  6. Step 6: Final answer
    x = 2,077.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.