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Finding the Fourth Proportional to 28,734.75, 43,102.13 and 7,958.25

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Solution

The fourth proportional to 28,734.75, 43,102.13 and 7,958.25 is: 11,937.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,734.75 : 43,102.13 = 7,958.25 : x
  2. Step 2: Convert to fraction form
    28,734.75/43,102.13 = 7,958.25/x
  3. Step 3: Cross multiply
    28,734.75x = 43,102.13 × 7,958.25
  4. Step 4: Simplify right side
    28,734.75x = 343,017,486.28
  5. Step 5: Solve for x
    x = 343,017,486.28/28,734.75
  6. Step 6: Final answer
    x = 11,937.38

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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.