Home / 5,478.85-8,218.26-2,192.71

Finding the Fourth Proportional to 5,478.85, 8,218.26 and 2,192.71

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Solution

The fourth proportional to 5,478.85, 8,218.26 and 2,192.71 is: 3,289.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.85 : 8,218.26 = 2,192.71 : x
  2. Step 2: Convert to fraction form
    5,478.85/8,218.26 = 2,192.71/x
  3. Step 3: Cross multiply
    5,478.85x = 8,218.26 × 2,192.71
  4. Step 4: Simplify right side
    5,478.85x = 18,020,260.88
  5. Step 5: Solve for x
    x = 18,020,260.88/5,478.85
  6. Step 6: Final answer
    x = 3,289.06

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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.