Home / 2,278.75-3,145.29-1,493.86

Finding the Fourth Proportional to 2,278.75, 3,145.29 and 1,493.86

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Solution

The fourth proportional to 2,278.75, 3,145.29 and 1,493.86 is: 2,061.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.75 : 3,145.29 = 1,493.86 : x
  2. Step 2: Convert to fraction form
    2,278.75/3,145.29 = 1,493.86/x
  3. Step 3: Cross multiply
    2,278.75x = 3,145.29 × 1,493.86
  4. Step 4: Simplify right side
    2,278.75x = 4,698,622.92
  5. Step 5: Solve for x
    x = 4,698,622.92/2,278.75
  6. Step 6: Final answer
    x = 2,061.93

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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.