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Finding the Fourth Proportional to 7,343.32, 10,133.78 and 3,986.13

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Solution

The fourth proportional to 7,343.32, 10,133.78 and 3,986.13 is: 5,500.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,343.32 : 10,133.78 = 3,986.13 : x
  2. Step 2: Convert to fraction form
    7,343.32/10,133.78 = 3,986.13/x
  3. Step 3: Cross multiply
    7,343.32x = 10,133.78 × 3,986.13
  4. Step 4: Simplify right side
    7,343.32x = 40,394,580.55
  5. Step 5: Solve for x
    x = 40,394,580.55/7,343.32
  6. Step 6: Final answer
    x = 5,500.86

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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.