Home / 3,859.56-5,787.18-1,261.08

Finding the Fourth Proportional to 3,859.56, 5,787.18 and 1,261.08

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Solution

The fourth proportional to 3,859.56, 5,787.18 and 1,261.08 is: 1,890.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.56 : 5,787.18 = 1,261.08 : x
  2. Step 2: Convert to fraction form
    3,859.56/5,787.18 = 1,261.08/x
  3. Step 3: Cross multiply
    3,859.56x = 5,787.18 × 1,261.08
  4. Step 4: Simplify right side
    3,859.56x = 7,298,096.95
  5. Step 5: Solve for x
    x = 7,298,096.95/3,859.56
  6. Step 6: Final answer
    x = 1,890.91

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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.