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Finding the Fourth Proportional to 5,191.12, 7,788.12 and 2,995.84

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Solution

The fourth proportional to 5,191.12, 7,788.12 and 2,995.84 is: 4,494.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,191.12 : 7,788.12 = 2,995.84 : x
  2. Step 2: Convert to fraction form
    5,191.12/7,788.12 = 2,995.84/x
  3. Step 3: Cross multiply
    5,191.12x = 7,788.12 × 2,995.84
  4. Step 4: Simplify right side
    5,191.12x = 23,331,961.42
  5. Step 5: Solve for x
    x = 23,331,961.42/5,191.12
  6. Step 6: Final answer
    x = 4,494.59

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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.