Home / 7,151.74-10,728.60-2,221.78

Finding the Fourth Proportional to 7,151.74, 10,728.60 and 2,221.78

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Solution

The fourth proportional to 7,151.74, 10,728.60 and 2,221.78 is: 3,332.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.74 : 10,728.60 = 2,221.78 : x
  2. Step 2: Convert to fraction form
    7,151.74/10,728.60 = 2,221.78/x
  3. Step 3: Cross multiply
    7,151.74x = 10,728.60 × 2,221.78
  4. Step 4: Simplify right side
    7,151.74x = 23,836,588.91
  5. Step 5: Solve for x
    x = 23,836,588.91/7,151.74
  6. Step 6: Final answer
    x = 3,332.98

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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.