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Finding the Fourth Proportional to 7,151.52, 10,728.60 and 3,256.20

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Solution

The fourth proportional to 7,151.52, 10,728.60 and 3,256.20 is: 4,884.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.52 : 10,728.60 = 3,256.20 : x
  2. Step 2: Convert to fraction form
    7,151.52/10,728.60 = 3,256.20/x
  3. Step 3: Cross multiply
    7,151.52x = 10,728.60 × 3,256.20
  4. Step 4: Simplify right side
    7,151.52x = 34,934,467.32
  5. Step 5: Solve for x
    x = 34,934,467.32/7,151.52
  6. Step 6: Final answer
    x = 4,884.90

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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.