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Finding the Fourth Proportional to 3,357.72, 4,620.78 and 3,260.76

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Solution

The fourth proportional to 3,357.72, 4,620.78 and 3,260.76 is: 4,487.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.72 : 4,620.78 = 3,260.76 : x
  2. Step 2: Convert to fraction form
    3,357.72/4,620.78 = 3,260.76/x
  3. Step 3: Cross multiply
    3,357.72x = 4,620.78 × 3,260.76
  4. Step 4: Simplify right side
    3,357.72x = 15,067,254.59
  5. Step 5: Solve for x
    x = 15,067,254.59/3,357.72
  6. Step 6: Final answer
    x = 4,487.35

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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.