Home / 2,586.38-3,879.57-1,125.19

Finding the Fourth Proportional to 2,586.38, 3,879.57 and 1,125.19

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Solution

The fourth proportional to 2,586.38, 3,879.57 and 1,125.19 is: 1,687.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.38 : 3,879.57 = 1,125.19 : x
  2. Step 2: Convert to fraction form
    2,586.38/3,879.57 = 1,125.19/x
  3. Step 3: Cross multiply
    2,586.38x = 3,879.57 × 1,125.19
  4. Step 4: Simplify right side
    2,586.38x = 4,365,259.27
  5. Step 5: Solve for x
    x = 4,365,259.27/2,586.38
  6. Step 6: Final answer
    x = 1,687.79

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Half scale
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Double scale
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Similar ratio
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1.5x scale

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.