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Finding the Fourth Proportional to 3,260.74, 4,891.42 and 1,069.48

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Solution

The fourth proportional to 3,260.74, 4,891.42 and 1,069.48 is: 1,604.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,260.74 : 4,891.42 = 1,069.48 : x
  2. Step 2: Convert to fraction form
    3,260.74/4,891.42 = 1,069.48/x
  3. Step 3: Cross multiply
    3,260.74x = 4,891.42 × 1,069.48
  4. Step 4: Simplify right side
    3,260.74x = 5,231,275.86
  5. Step 5: Solve for x
    x = 5,231,275.86/3,260.74
  6. Step 6: Final answer
    x = 1,604.32

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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.