Home / 2,281.95-3,149.03-1,287.19

Finding the Fourth Proportional to 2,281.95, 3,149.03 and 1,287.19

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Solution

The fourth proportional to 2,281.95, 3,149.03 and 1,287.19 is: 1,776.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,281.95 : 3,149.03 = 1,287.19 : x
  2. Step 2: Convert to fraction form
    2,281.95/3,149.03 = 1,287.19/x
  3. Step 3: Cross multiply
    2,281.95x = 3,149.03 × 1,287.19
  4. Step 4: Simplify right side
    2,281.95x = 4,053,399.93
  5. Step 5: Solve for x
    x = 4,053,399.93/2,281.95
  6. Step 6: Final answer
    x = 1,776.29

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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.