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Finding the Fourth Proportional to 5,262.77, 7,863.62 and 3,987.97

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Solution

The fourth proportional to 5,262.77, 7,863.62 and 3,987.97 is: 5,958.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,262.77 : 7,863.62 = 3,987.97 : x
  2. Step 2: Convert to fraction form
    5,262.77/7,863.62 = 3,987.97/x
  3. Step 3: Cross multiply
    5,262.77x = 7,863.62 × 3,987.97
  4. Step 4: Simplify right side
    5,262.77x = 31,359,841.05
  5. Step 5: Solve for x
    x = 31,359,841.05/5,262.77
  6. Step 6: Final answer
    x = 5,958.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.