Home / 2,780.84-3,837.45-1,601.90

Finding the Fourth Proportional to 2,780.84, 3,837.45 and 1,601.90

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Solution

The fourth proportional to 2,780.84, 3,837.45 and 1,601.90 is: 2,210.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.84 : 3,837.45 = 1,601.90 : x
  2. Step 2: Convert to fraction form
    2,780.84/3,837.45 = 1,601.90/x
  3. Step 3: Cross multiply
    2,780.84x = 3,837.45 × 1,601.90
  4. Step 4: Simplify right side
    2,780.84x = 6,147,211.16
  5. Step 5: Solve for x
    x = 6,147,211.16/2,780.84
  6. Step 6: Final answer
    x = 2,210.56

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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.