Home / 3,178.39-4,383.15-2,432.38

Finding the Fourth Proportional to 3,178.39, 4,383.15 and 2,432.38

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Solution

The fourth proportional to 3,178.39, 4,383.15 and 2,432.38 is: 3,354.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.39 : 4,383.15 = 2,432.38 : x
  2. Step 2: Convert to fraction form
    3,178.39/4,383.15 = 2,432.38/x
  3. Step 3: Cross multiply
    3,178.39x = 4,383.15 × 2,432.38
  4. Step 4: Simplify right side
    3,178.39x = 10,661,486.40
  5. Step 5: Solve for x
    x = 10,661,486.40/3,178.39
  6. Step 6: Final answer
    x = 3,354.37

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Half 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.