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Finding the Fourth Proportional to 5,697.69, 7,862.75 and 3,179.73

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Solution

The fourth proportional to 5,697.69, 7,862.75 and 3,179.73 is: 4,387.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,697.69 : 7,862.75 = 3,179.73 : x
  2. Step 2: Convert to fraction form
    5,697.69/7,862.75 = 3,179.73/x
  3. Step 3: Cross multiply
    5,697.69x = 7,862.75 × 3,179.73
  4. Step 4: Simplify right side
    5,697.69x = 25,001,422.06
  5. Step 5: Solve for x
    x = 25,001,422.06/5,697.69
  6. Step 6: Final answer
    x = 4,387.99

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.