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Finding the Fourth Proportional to 7,318.42, 10,099.42 and 3,961.24

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Solution

The fourth proportional to 7,318.42, 10,099.42 and 3,961.24 is: 5,466.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,318.42 : 10,099.42 = 3,961.24 : x
  2. Step 2: Convert to fraction form
    7,318.42/10,099.42 = 3,961.24/x
  3. Step 3: Cross multiply
    7,318.42x = 10,099.42 × 3,961.24
  4. Step 4: Simplify right side
    7,318.42x = 40,006,191.33
  5. Step 5: Solve for x
    x = 40,006,191.33/7,318.42
  6. Step 6: Final answer
    x = 5,466.51

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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.