Home / 3,856.59-5,782.46-2,126.43

Finding the Fourth Proportional to 3,856.59, 5,782.46 and 2,126.43

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Solution

The fourth proportional to 3,856.59, 5,782.46 and 2,126.43 is: 3,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,856.59 : 5,782.46 = 2,126.43 : x
  2. Step 2: Convert to fraction form
    3,856.59/5,782.46 = 2,126.43/x
  3. Step 3: Cross multiply
    3,856.59x = 5,782.46 × 2,126.43
  4. Step 4: Simplify right side
    3,856.59x = 12,295,985.79
  5. Step 5: Solve for x
    x = 12,295,985.79/3,856.59
  6. Step 6: Final answer
    x = 3,188.31

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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.