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Finding the Fourth Proportional to 28,751.25, 43,126.88 and 7,974.75

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Solution

The fourth proportional to 28,751.25, 43,126.88 and 7,974.75 is: 11,962.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,751.25 : 43,126.88 = 7,974.75 : x
  2. Step 2: Convert to fraction form
    28,751.25/43,126.88 = 7,974.75/x
  3. Step 3: Cross multiply
    28,751.25x = 43,126.88 × 7,974.75
  4. Step 4: Simplify right side
    28,751.25x = 343,926,046.41
  5. Step 5: Solve for x
    x = 343,926,046.41/28,751.25
  6. Step 6: Final answer
    x = 11,962.13

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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.