Home / 2,277.20-3,142.67-1,392.75

Finding the Fourth Proportional to 2,277.20, 3,142.67 and 1,392.75

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Solution

The fourth proportional to 2,277.20, 3,142.67 and 1,392.75 is: 1,922.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,277.20 : 3,142.67 = 1,392.75 : x
  2. Step 2: Convert to fraction form
    2,277.20/3,142.67 = 1,392.75/x
  3. Step 3: Cross multiply
    2,277.20x = 3,142.67 × 1,392.75
  4. Step 4: Simplify right side
    2,277.20x = 4,376,946.68
  5. Step 5: Solve for x
    x = 4,376,946.68/2,277.20
  6. Step 6: Final answer
    x = 1,922.07

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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.