Home / 2,780.39-3,837.86-1,601.75

Finding the Fourth Proportional to 2,780.39, 3,837.86 and 1,601.75

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Solution

The fourth proportional to 2,780.39, 3,837.86 and 1,601.75 is: 2,210.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.39 : 3,837.86 = 1,601.75 : x
  2. Step 2: Convert to fraction form
    2,780.39/3,837.86 = 1,601.75/x
  3. Step 3: Cross multiply
    2,780.39x = 3,837.86 × 1,601.75
  4. Step 4: Simplify right side
    2,780.39x = 6,147,292.26
  5. Step 5: Solve for x
    x = 6,147,292.26/2,780.39
  6. Step 6: Final answer
    x = 2,210.95

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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.