Home / 3,538.49-4,872.35-2,790.05

Finding the Fourth Proportional to 3,538.49, 4,872.35 and 2,790.05

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Solution

The fourth proportional to 3,538.49, 4,872.35 and 2,790.05 is: 3,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.49 : 4,872.35 = 2,790.05 : x
  2. Step 2: Convert to fraction form
    3,538.49/4,872.35 = 2,790.05/x
  3. Step 3: Cross multiply
    3,538.49x = 4,872.35 × 2,790.05
  4. Step 4: Simplify right side
    3,538.49x = 13,594,082.73
  5. Step 5: Solve for x
    x = 13,594,082.73/3,538.49
  6. Step 6: Final answer
    x = 3,841.78

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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.