Home / 2,178.42-3,261.40-2,040.48

Finding the Fourth Proportional to 2,178.42, 3,261.40 and 2,040.48

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Solution

The fourth proportional to 2,178.42, 3,261.40 and 2,040.48 is: 3,054.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.42 : 3,261.40 = 2,040.48 : x
  2. Step 2: Convert to fraction form
    2,178.42/3,261.40 = 2,040.48/x
  3. Step 3: Cross multiply
    2,178.42x = 3,261.40 × 2,040.48
  4. Step 4: Simplify right side
    2,178.42x = 6,654,821.47
  5. Step 5: Solve for x
    x = 6,654,821.47/2,178.42
  6. Step 6: Final answer
    x = 3,054.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.