Home / 5,286.10-7,919.36-2,650.53

Finding the Fourth Proportional to 5,286.10, 7,919.36 and 2,650.53

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Solution

The fourth proportional to 5,286.10, 7,919.36 and 2,650.53 is: 3,970.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.10 : 7,919.36 = 2,650.53 : x
  2. Step 2: Convert to fraction form
    5,286.10/7,919.36 = 2,650.53/x
  3. Step 3: Cross multiply
    5,286.10x = 7,919.36 × 2,650.53
  4. Step 4: Simplify right side
    5,286.10x = 20,990,448.41
  5. Step 5: Solve for x
    x = 20,990,448.41/5,286.10
  6. Step 6: Final answer
    x = 3,970.88

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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.