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Finding the Fourth Proportional to 8,717.96, 12,035.38 and 7,372.96

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Solution

The fourth proportional to 8,717.96, 12,035.38 and 7,372.96 is: 10,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,717.96 : 12,035.38 = 7,372.96 : x
  2. Step 2: Convert to fraction form
    8,717.96/12,035.38 = 7,372.96/x
  3. Step 3: Cross multiply
    8,717.96x = 12,035.38 × 7,372.96
  4. Step 4: Simplify right side
    8,717.96x = 88,736,375.32
  5. Step 5: Solve for x
    x = 88,736,375.32/8,717.96
  6. Step 6: Final answer
    x = 10,178.57

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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.