Home / 5,621.81-7,757.90-3,103.87

Finding the Fourth Proportional to 5,621.81, 7,757.90 and 3,103.87

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Solution

The fourth proportional to 5,621.81, 7,757.90 and 3,103.87 is: 4,283.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.81 : 7,757.90 = 3,103.87 : x
  2. Step 2: Convert to fraction form
    5,621.81/7,757.90 = 3,103.87/x
  3. Step 3: Cross multiply
    5,621.81x = 7,757.90 × 3,103.87
  4. Step 4: Simplify right side
    5,621.81x = 24,079,505.31
  5. Step 5: Solve for x
    x = 24,079,505.31/5,621.81
  6. Step 6: Final answer
    x = 4,283.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.