Home / 2,273.12-3,136.76-1,278.42

Finding the Fourth Proportional to 2,273.12, 3,136.76 and 1,278.42

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Solution

The fourth proportional to 2,273.12, 3,136.76 and 1,278.42 is: 1,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,273.12 : 3,136.76 = 1,278.42 : x
  2. Step 2: Convert to fraction form
    2,273.12/3,136.76 = 1,278.42/x
  3. Step 3: Cross multiply
    2,273.12x = 3,136.76 × 1,278.42
  4. Step 4: Simplify right side
    2,273.12x = 4,010,101.00
  5. Step 5: Solve for x
    x = 4,010,101.00/2,273.12
  6. Step 6: Final answer
    x = 1,764.14

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Half scale
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Double scale
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1.5x scale

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.