Home / 3,811.31-5,720.57-1,963.70

Finding the Fourth Proportional to 3,811.31, 5,720.57 and 1,963.70

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Solution

The fourth proportional to 3,811.31, 5,720.57 and 1,963.70 is: 2,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.31 : 5,720.57 = 1,963.70 : x
  2. Step 2: Convert to fraction form
    3,811.31/5,720.57 = 1,963.70/x
  3. Step 3: Cross multiply
    3,811.31x = 5,720.57 × 1,963.70
  4. Step 4: Simplify right side
    3,811.31x = 11,233,444.89
  5. Step 5: Solve for x
    x = 11,233,444.89/3,811.31
  6. Step 6: Final answer
    x = 2,947.40

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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.