Home / 5,478.44-8,220.72-2,191.77

Finding the Fourth Proportional to 5,478.44, 8,220.72 and 2,191.77

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Solution

The fourth proportional to 5,478.44, 8,220.72 and 2,191.77 is: 3,288.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.44 : 8,220.72 = 2,191.77 : x
  2. Step 2: Convert to fraction form
    5,478.44/8,220.72 = 2,191.77/x
  3. Step 3: Cross multiply
    5,478.44x = 8,220.72 × 2,191.77
  4. Step 4: Simplify right side
    5,478.44x = 18,017,927.47
  5. Step 5: Solve for x
    x = 18,017,927.47/5,478.44
  6. Step 6: Final answer
    x = 3,288.88

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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.