Home / 2,272.57-3,136.12-1,277.85

Finding the Fourth Proportional to 2,272.57, 3,136.12 and 1,277.85

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Solution

The fourth proportional to 2,272.57, 3,136.12 and 1,277.85 is: 1,763.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,272.57 : 3,136.12 = 1,277.85 : x
  2. Step 2: Convert to fraction form
    2,272.57/3,136.12 = 1,277.85/x
  3. Step 3: Cross multiply
    2,272.57x = 3,136.12 × 1,277.85
  4. Step 4: Simplify right side
    2,272.57x = 4,007,490.94
  5. Step 5: Solve for x
    x = 4,007,490.94/2,272.57
  6. Step 6: Final answer
    x = 1,763.42

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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.