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Finding the Fourth Proportional to 6,151.68, 8,489.20 and 3,357.20

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Solution

The fourth proportional to 6,151.68, 8,489.20 and 3,357.20 is: 4,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,151.68 : 8,489.20 = 3,357.20 : x
  2. Step 2: Convert to fraction form
    6,151.68/8,489.20 = 3,357.20/x
  3. Step 3: Cross multiply
    6,151.68x = 8,489.20 × 3,357.20
  4. Step 4: Simplify right side
    6,151.68x = 28,499,942.24
  5. Step 5: Solve for x
    x = 28,499,942.24/6,151.68
  6. Step 6: Final answer
    x = 4,632.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.