Home / 3,220.38-4,443.12-1,894.14

Finding the Fourth Proportional to 3,220.38, 4,443.12 and 1,894.14

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Solution

The fourth proportional to 3,220.38, 4,443.12 and 1,894.14 is: 2,613.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.38 : 4,443.12 = 1,894.14 : x
  2. Step 2: Convert to fraction form
    3,220.38/4,443.12 = 1,894.14/x
  3. Step 3: Cross multiply
    3,220.38x = 4,443.12 × 1,894.14
  4. Step 4: Simplify right side
    3,220.38x = 8,415,891.32
  5. Step 5: Solve for x
    x = 8,415,891.32/3,220.38
  6. Step 6: Final answer
    x = 2,613.32

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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.