Home / 2,780.28-3,836.46-1,661.01

Finding the Fourth Proportional to 2,780.28, 3,836.46 and 1,661.01

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Solution

The fourth proportional to 2,780.28, 3,836.46 and 1,661.01 is: 2,292.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,780.28 : 3,836.46 = 1,661.01 : x
  2. Step 2: Convert to fraction form
    2,780.28/3,836.46 = 1,661.01/x
  3. Step 3: Cross multiply
    2,780.28x = 3,836.46 × 1,661.01
  4. Step 4: Simplify right side
    2,780.28x = 6,372,398.42
  5. Step 5: Solve for x
    x = 6,372,398.42/2,780.28
  6. Step 6: Final answer
    x = 2,292.00

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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.