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Finding the Fourth Proportional to 3,552.92, 4,902.78 and 1,981.10

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Solution

The fourth proportional to 3,552.92, 4,902.78 and 1,981.10 is: 2,733.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,552.92 : 4,902.78 = 1,981.10 : x
  2. Step 2: Convert to fraction form
    3,552.92/4,902.78 = 1,981.10/x
  3. Step 3: Cross multiply
    3,552.92x = 4,902.78 × 1,981.10
  4. Step 4: Simplify right side
    3,552.92x = 9,712,897.46
  5. Step 5: Solve for x
    x = 9,712,897.46/3,552.92
  6. Step 6: Final answer
    x = 2,733.78

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Half scale
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Double scale
Find fourth proportional to 3,553.92, 4,904.16 and 1,982.10
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.