Home / 7,478.85-11,220.46-2,213.99

Finding the Fourth Proportional to 7,478.85, 11,220.46 and 2,213.99

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Solution

The fourth proportional to 7,478.85, 11,220.46 and 2,213.99 is: 3,321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.85 : 11,220.46 = 2,213.99 : x
  2. Step 2: Convert to fraction form
    7,478.85/11,220.46 = 2,213.99/x
  3. Step 3: Cross multiply
    7,478.85x = 11,220.46 × 2,213.99
  4. Step 4: Simplify right side
    7,478.85x = 24,842,008.75
  5. Step 5: Solve for x
    x = 24,842,008.75/7,478.85
  6. Step 6: Final answer
    x = 3,321.64

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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.