Home / 3,858.24-5,787.38-1,261.18

Finding the Fourth Proportional to 3,858.24, 5,787.38 and 1,261.18

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Solution

The fourth proportional to 3,858.24, 5,787.38 and 1,261.18 is: 1,891.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,858.24 : 5,787.38 = 1,261.18 : x
  2. Step 2: Convert to fraction form
    3,858.24/5,787.38 = 1,261.18/x
  3. Step 3: Cross multiply
    3,858.24x = 5,787.38 × 1,261.18
  4. Step 4: Simplify right side
    3,858.24x = 7,298,927.91
  5. Step 5: Solve for x
    x = 7,298,927.91/3,858.24
  6. Step 6: Final answer
    x = 1,891.78

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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.