Home / 7,480.98-11,221.20-2,215.80

Finding the Fourth Proportional to 7,480.98, 11,221.20 and 2,215.80

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Solution

The fourth proportional to 7,480.98, 11,221.20 and 2,215.80 is: 3,323.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,480.98 : 11,221.20 = 2,215.80 : x
  2. Step 2: Convert to fraction form
    7,480.98/11,221.20 = 2,215.80/x
  3. Step 3: Cross multiply
    7,480.98x = 11,221.20 × 2,215.80
  4. Step 4: Simplify right side
    7,480.98x = 24,863,934.96
  5. Step 5: Solve for x
    x = 24,863,934.96/7,480.98
  6. Step 6: Final answer
    x = 3,323.62

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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.