Home / 5,230.50-7,218.12-2,872.80

Finding the Fourth Proportional to 5,230.50, 7,218.12 and 2,872.80

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Solution

The fourth proportional to 5,230.50, 7,218.12 and 2,872.80 is: 3,964.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.50 : 7,218.12 = 2,872.80 : x
  2. Step 2: Convert to fraction form
    5,230.50/7,218.12 = 2,872.80/x
  3. Step 3: Cross multiply
    5,230.50x = 7,218.12 × 2,872.80
  4. Step 4: Simplify right side
    5,230.50x = 20,736,215.14
  5. Step 5: Solve for x
    x = 20,736,215.14/5,230.50
  6. Step 6: Final answer
    x = 3,964.48

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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.