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Finding the Fourth Proportional to 2,649.50, 3,972.82 and 893.92

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Solution

The fourth proportional to 2,649.50, 3,972.82 and 893.92 is: 1,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.50 : 3,972.82 = 893.92 : x
  2. Step 2: Convert to fraction form
    2,649.50/3,972.82 = 893.92/x
  3. Step 3: Cross multiply
    2,649.50x = 3,972.82 × 893.92
  4. Step 4: Simplify right side
    2,649.50x = 3,551,383.25
  5. Step 5: Solve for x
    x = 3,551,383.25/2,649.50
  6. Step 6: Final answer
    x = 1,340.40

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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.