Home / 2,780.52-3,836.33-1,661.73

Finding the Fourth Proportional to 2,780.52, 3,836.33 and 1,661.73

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Solution

The fourth proportional to 2,780.52, 3,836.33 and 1,661.73 is: 2,292.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.52 : 3,836.33 = 1,661.73 : x
  2. Step 2: Convert to fraction form
    2,780.52/3,836.33 = 1,661.73/x
  3. Step 3: Cross multiply
    2,780.52x = 3,836.33 × 1,661.73
  4. Step 4: Simplify right side
    2,780.52x = 6,374,948.81
  5. Step 5: Solve for x
    x = 6,374,948.81/2,780.52
  6. Step 6: Final answer
    x = 2,292.72

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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.