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Finding the Fourth Proportional to 3,355.38, 4,630.14 and 1,938.78

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Solution

The fourth proportional to 3,355.38, 4,630.14 and 1,938.78 is: 2,675.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,355.38 : 4,630.14 = 1,938.78 : x
  2. Step 2: Convert to fraction form
    3,355.38/4,630.14 = 1,938.78/x
  3. Step 3: Cross multiply
    3,355.38x = 4,630.14 × 1,938.78
  4. Step 4: Simplify right side
    3,355.38x = 8,976,822.83
  5. Step 5: Solve for x
    x = 8,976,822.83/3,355.38
  6. Step 6: Final answer
    x = 2,675.35

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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.