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Finding the Fourth Proportional to 7,146.96, 9,863.10 and 4,003.18

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Solution

The fourth proportional to 7,146.96, 9,863.10 and 4,003.18 is: 5,524.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,146.96 : 9,863.10 = 4,003.18 : x
  2. Step 2: Convert to fraction form
    7,146.96/9,863.10 = 4,003.18/x
  3. Step 3: Cross multiply
    7,146.96x = 9,863.10 × 4,003.18
  4. Step 4: Simplify right side
    7,146.96x = 39,483,764.66
  5. Step 5: Solve for x
    x = 39,483,764.66/7,146.96
  6. Step 6: Final answer
    x = 5,524.55

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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.