Home / 3,859.56-5,789.88-1,261.98

Finding the Fourth Proportional to 3,859.56, 5,789.88 and 1,261.98

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Solution

The fourth proportional to 3,859.56, 5,789.88 and 1,261.98 is: 1,893.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.56 : 5,789.88 = 1,261.98 : x
  2. Step 2: Convert to fraction form
    3,859.56/5,789.88 = 1,261.98/x
  3. Step 3: Cross multiply
    3,859.56x = 5,789.88 × 1,261.98
  4. Step 4: Simplify right side
    3,859.56x = 7,306,712.76
  5. Step 5: Solve for x
    x = 7,306,712.76/3,859.56
  6. Step 6: Final answer
    x = 1,893.15

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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.