Home / 5,230.20-7,218-2,872.56

Finding the Fourth Proportional to 5,230.20, 7,218 and 2,872.56

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Solution

The fourth proportional to 5,230.20, 7,218 and 2,872.56 is: 3,964.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.20 : 7,218 = 2,872.56 : x
  2. Step 2: Convert to fraction form
    5,230.20/7,218 = 2,872.56/x
  3. Step 3: Cross multiply
    5,230.20x = 7,218 × 2,872.56
  4. Step 4: Simplify right side
    5,230.20x = 20,734,138.08
  5. Step 5: Solve for x
    x = 20,734,138.08/5,230.20
  6. Step 6: Final answer
    x = 3,964.31

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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.