Home / 5,378.38-7,422.16-3,021.28

Finding the Fourth Proportional to 5,378.38, 7,422.16 and 3,021.28

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Solution

The fourth proportional to 5,378.38, 7,422.16 and 3,021.28 is: 4,169.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.38 : 7,422.16 = 3,021.28 : x
  2. Step 2: Convert to fraction form
    5,378.38/7,422.16 = 3,021.28/x
  3. Step 3: Cross multiply
    5,378.38x = 7,422.16 × 3,021.28
  4. Step 4: Simplify right side
    5,378.38x = 22,424,423.56
  5. Step 5: Solve for x
    x = 22,424,423.56/5,378.38
  6. Step 6: Final answer
    x = 4,169.36

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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.