Home / 3,858.80-5,789.10-1,261.76

Finding the Fourth Proportional to 3,858.80, 5,789.10 and 1,261.76

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Solution

The fourth proportional to 3,858.80, 5,789.10 and 1,261.76 is: 1,892.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.80 : 5,789.10 = 1,261.76 : x
  2. Step 2: Convert to fraction form
    3,858.80/5,789.10 = 1,261.76/x
  3. Step 3: Cross multiply
    3,858.80x = 5,789.10 × 1,261.76
  4. Step 4: Simplify right side
    3,858.80x = 7,304,454.82
  5. Step 5: Solve for x
    x = 7,304,454.82/3,858.80
  6. Step 6: Final answer
    x = 1,892.93

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1.5x scale

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.