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Finding the Fourth Proportional to 5,251.20, 7,968 and 5,251.20

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Solution

The fourth proportional to 5,251.20, 7,968 and 5,251.20 is: 7,968.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.20 : 7,968 = 5,251.20 : x
  2. Step 2: Convert to fraction form
    5,251.20/7,968 = 5,251.20/x
  3. Step 3: Cross multiply
    5,251.20x = 7,968 × 5,251.20
  4. Step 4: Simplify right side
    5,251.20x = 41,841,561.60
  5. Step 5: Solve for x
    x = 41,841,561.60/5,251.20
  6. Step 6: Final answer
    x = 7,968.00

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.