Home / 5,665.38-7,818.21-3,147.48

Finding the Fourth Proportional to 5,665.38, 7,818.21 and 3,147.48

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Solution

The fourth proportional to 5,665.38, 7,818.21 and 3,147.48 is: 4,343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.38 : 7,818.21 = 3,147.48 : x
  2. Step 2: Convert to fraction form
    5,665.38/7,818.21 = 3,147.48/x
  3. Step 3: Cross multiply
    5,665.38x = 7,818.21 × 3,147.48
  4. Step 4: Simplify right side
    5,665.38x = 24,607,659.61
  5. Step 5: Solve for x
    x = 24,607,659.61/5,665.38
  6. Step 6: Final answer
    x = 4,343.51

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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.