Home / 3,586.66-5,380.19-1,278.16

Finding the Fourth Proportional to 3,586.66, 5,380.19 and 1,278.16

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Solution

The fourth proportional to 3,586.66, 5,380.19 and 1,278.16 is: 1,917.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,586.66 : 5,380.19 = 1,278.16 : x
  2. Step 2: Convert to fraction form
    3,586.66/5,380.19 = 1,278.16/x
  3. Step 3: Cross multiply
    3,586.66x = 5,380.19 × 1,278.16
  4. Step 4: Simplify right side
    3,586.66x = 6,876,743.65
  5. Step 5: Solve for x
    x = 6,876,743.65/3,586.66
  6. Step 6: Final answer
    x = 1,917.31

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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.