Home / 5,817.30-8,728.26-2,119.78

Finding the Fourth Proportional to 5,817.30, 8,728.26 and 2,119.78

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Solution

The fourth proportional to 5,817.30, 8,728.26 and 2,119.78 is: 3,180.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,817.30 : 8,728.26 = 2,119.78 : x
  2. Step 2: Convert to fraction form
    5,817.30/8,728.26 = 2,119.78/x
  3. Step 3: Cross multiply
    5,817.30x = 8,728.26 × 2,119.78
  4. Step 4: Simplify right side
    5,817.30x = 18,501,990.98
  5. Step 5: Solve for x
    x = 18,501,990.98/5,817.30
  6. Step 6: Final answer
    x = 3,180.51

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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.