Home / 5,378.43-7,422.23-3,020.57

Finding the Fourth Proportional to 5,378.43, 7,422.23 and 3,020.57

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Solution

The fourth proportional to 5,378.43, 7,422.23 and 3,020.57 is: 4,168.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.43 : 7,422.23 = 3,020.57 : x
  2. Step 2: Convert to fraction form
    5,378.43/7,422.23 = 3,020.57/x
  3. Step 3: Cross multiply
    5,378.43x = 7,422.23 × 3,020.57
  4. Step 4: Simplify right side
    5,378.43x = 22,419,405.29
  5. Step 5: Solve for x
    x = 22,419,405.29/5,378.43
  6. Step 6: Final answer
    x = 4,168.39

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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.