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Finding the Fourth Proportional to 7,151.78, 10,650.20 and 7,028.66

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Solution

The fourth proportional to 7,151.78, 10,650.20 and 7,028.66 is: 10,466.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.78 : 10,650.20 = 7,028.66 : x
  2. Step 2: Convert to fraction form
    7,151.78/10,650.20 = 7,028.66/x
  3. Step 3: Cross multiply
    7,151.78x = 10,650.20 × 7,028.66
  4. Step 4: Simplify right side
    7,151.78x = 74,856,546.34
  5. Step 5: Solve for x
    x = 74,856,546.34/7,151.78
  6. Step 6: Final answer
    x = 10,466.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.