Home / 2,224.11-3,069.36-1,280.13

Finding the Fourth Proportional to 2,224.11, 3,069.36 and 1,280.13

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Solution

The fourth proportional to 2,224.11, 3,069.36 and 1,280.13 is: 1,766.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,224.11 : 3,069.36 = 1,280.13 : x
  2. Step 2: Convert to fraction form
    2,224.11/3,069.36 = 1,280.13/x
  3. Step 3: Cross multiply
    2,224.11x = 3,069.36 × 1,280.13
  4. Step 4: Simplify right side
    2,224.11x = 3,929,179.82
  5. Step 5: Solve for x
    x = 3,929,179.82/2,224.11
  6. Step 6: Final answer
    x = 1,766.63

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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.