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Finding the Fourth Proportional to 3,357.99, 5,005.31 and 3,108.78

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Solution

The fourth proportional to 3,357.99, 5,005.31 and 3,108.78 is: 4,633.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,357.99 : 5,005.31 = 3,108.78 : x
  2. Step 2: Convert to fraction form
    3,357.99/5,005.31 = 3,108.78/x
  3. Step 3: Cross multiply
    3,357.99x = 5,005.31 × 3,108.78
  4. Step 4: Simplify right side
    3,357.99x = 15,560,392.08
  5. Step 5: Solve for x
    x = 15,560,392.08/3,357.99
  6. Step 6: Final answer
    x = 4,633.84

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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.