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Finding the Fourth Proportional to 3,480.62, 5,220.95 and 883.55

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Solution

The fourth proportional to 3,480.62, 5,220.95 and 883.55 is: 1,325.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.62 : 5,220.95 = 883.55 : x
  2. Step 2: Convert to fraction form
    3,480.62/5,220.95 = 883.55/x
  3. Step 3: Cross multiply
    3,480.62x = 5,220.95 × 883.55
  4. Step 4: Simplify right side
    3,480.62x = 4,612,979.01
  5. Step 5: Solve for x
    x = 4,612,979.01/3,480.62
  6. Step 6: Final answer
    x = 1,325.33

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.