Home / 7,122.20-10,687.32-3,835.22

Finding the Fourth Proportional to 7,122.20, 10,687.32 and 3,835.22

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Solution

The fourth proportional to 7,122.20, 10,687.32 and 3,835.22 is: 5,754.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.20 : 10,687.32 = 3,835.22 : x
  2. Step 2: Convert to fraction form
    7,122.20/10,687.32 = 3,835.22/x
  3. Step 3: Cross multiply
    7,122.20x = 10,687.32 × 3,835.22
  4. Step 4: Simplify right side
    7,122.20x = 40,988,223.41
  5. Step 5: Solve for x
    x = 40,988,223.41/7,122.20
  6. Step 6: Final answer
    x = 5,754.99

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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.