Home / 7,151.28-10,728.74-2,221.62

Finding the Fourth Proportional to 7,151.28, 10,728.74 and 2,221.62

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Solution

The fourth proportional to 7,151.28, 10,728.74 and 2,221.62 is: 3,333.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.28 : 10,728.74 = 2,221.62 : x
  2. Step 2: Convert to fraction form
    7,151.28/10,728.74 = 2,221.62/x
  3. Step 3: Cross multiply
    7,151.28x = 10,728.74 × 2,221.62
  4. Step 4: Simplify right side
    7,151.28x = 23,835,183.36
  5. Step 5: Solve for x
    x = 23,835,183.36/7,151.28
  6. Step 6: Final answer
    x = 3,333.00

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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.