Home / 5,143.15-7,713.51-2,219.86

Finding the Fourth Proportional to 5,143.15, 7,713.51 and 2,219.86

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Solution

The fourth proportional to 5,143.15, 7,713.51 and 2,219.86 is: 3,329.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.15 : 7,713.51 = 2,219.86 : x
  2. Step 2: Convert to fraction form
    5,143.15/7,713.51 = 2,219.86/x
  3. Step 3: Cross multiply
    5,143.15x = 7,713.51 × 2,219.86
  4. Step 4: Simplify right side
    5,143.15x = 17,122,912.31
  5. Step 5: Solve for x
    x = 17,122,912.31/5,143.15
  6. Step 6: Final answer
    x = 3,329.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.