Home / 2,780.52-3,836.93-1,661.50

Finding the Fourth Proportional to 2,780.52, 3,836.93 and 1,661.50

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Solution

The fourth proportional to 2,780.52, 3,836.93 and 1,661.50 is: 2,292.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.52 : 3,836.93 = 1,661.50 : x
  2. Step 2: Convert to fraction form
    2,780.52/3,836.93 = 1,661.50/x
  3. Step 3: Cross multiply
    2,780.52x = 3,836.93 × 1,661.50
  4. Step 4: Simplify right side
    2,780.52x = 6,375,059.20
  5. Step 5: Solve for x
    x = 6,375,059.20/2,780.52
  6. Step 6: Final answer
    x = 2,292.76

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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.