Home / 1,249.05-1,724.18-1,117.83

Finding the Fourth Proportional to 1,249.05, 1,724.18 and 1,117.83

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Solution

The fourth proportional to 1,249.05, 1,724.18 and 1,117.83 is: 1,543.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.05 : 1,724.18 = 1,117.83 : x
  2. Step 2: Convert to fraction form
    1,249.05/1,724.18 = 1,117.83/x
  3. Step 3: Cross multiply
    1,249.05x = 1,724.18 × 1,117.83
  4. Step 4: Simplify right side
    1,249.05x = 1,927,334.54
  5. Step 5: Solve for x
    x = 1,927,334.54/1,249.05
  6. Step 6: Final answer
    x = 1,543.04

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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.