Home / 3,418.40-5,124.80-1,338.02

Finding the Fourth Proportional to 3,418.40, 5,124.80 and 1,338.02

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Solution

The fourth proportional to 3,418.40, 5,124.80 and 1,338.02 is: 2,005.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.40 : 5,124.80 = 1,338.02 : x
  2. Step 2: Convert to fraction form
    3,418.40/5,124.80 = 1,338.02/x
  3. Step 3: Cross multiply
    3,418.40x = 5,124.80 × 1,338.02
  4. Step 4: Simplify right side
    3,418.40x = 6,857,052.58
  5. Step 5: Solve for x
    x = 6,857,052.58/3,418.40
  6. Step 6: Final answer
    x = 2,005.93

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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.