Home / 5,230.70-7,218.38-2,872.90

Finding the Fourth Proportional to 5,230.70, 7,218.38 and 2,872.90

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Solution

The fourth proportional to 5,230.70, 7,218.38 and 2,872.90 is: 3,964.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,230.70 : 7,218.38 = 2,872.90 : x
  2. Step 2: Convert to fraction form
    5,230.70/7,218.38 = 2,872.90/x
  3. Step 3: Cross multiply
    5,230.70x = 7,218.38 × 2,872.90
  4. Step 4: Simplify right side
    5,230.70x = 20,737,683.90
  5. Step 5: Solve for x
    x = 20,737,683.90/5,230.70
  6. Step 6: Final answer
    x = 3,964.61

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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.