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Finding the Fourth Proportional to 3,990.52, 5,508.17 and 2,398.33

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Solution

The fourth proportional to 3,990.52, 5,508.17 and 2,398.33 is: 3,310.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.52 : 5,508.17 = 2,398.33 : x
  2. Step 2: Convert to fraction form
    3,990.52/5,508.17 = 2,398.33/x
  3. Step 3: Cross multiply
    3,990.52x = 5,508.17 × 2,398.33
  4. Step 4: Simplify right side
    3,990.52x = 13,210,409.36
  5. Step 5: Solve for x
    x = 13,210,409.36/3,990.52
  6. Step 6: Final answer
    x = 3,310.45

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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.