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Finding the Fourth Proportional to 3,390.92, 4,678.03 and 2,272.22

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Solution

The fourth proportional to 3,390.92, 4,678.03 and 2,272.22 is: 3,134.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,390.92 : 4,678.03 = 2,272.22 : x
  2. Step 2: Convert to fraction form
    3,390.92/4,678.03 = 2,272.22/x
  3. Step 3: Cross multiply
    3,390.92x = 4,678.03 × 2,272.22
  4. Step 4: Simplify right side
    3,390.92x = 10,629,513.33
  5. Step 5: Solve for x
    x = 10,629,513.33/3,390.92
  6. Step 6: Final answer
    x = 3,134.70

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Half scale
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Double scale
Find fourth proportional to 3,391.92, 4,679.41 and 2,273.22
Similar ratio
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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.