Home / 5,378.49-7,422.35-3,020.66

Finding the Fourth Proportional to 5,378.49, 7,422.35 and 3,020.66

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Solution

The fourth proportional to 5,378.49, 7,422.35 and 3,020.66 is: 4,168.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.49 : 7,422.35 = 3,020.66 : x
  2. Step 2: Convert to fraction form
    5,378.49/7,422.35 = 3,020.66/x
  3. Step 3: Cross multiply
    5,378.49x = 7,422.35 × 3,020.66
  4. Step 4: Simplify right side
    5,378.49x = 22,420,343.54
  5. Step 5: Solve for x
    x = 22,420,343.54/5,378.49
  6. Step 6: Final answer
    x = 4,168.52

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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.