Home / 7,816.21-11,724.18-3,137.28

Finding the Fourth Proportional to 7,816.21, 11,724.18 and 3,137.28

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Solution

The fourth proportional to 7,816.21, 11,724.18 and 3,137.28 is: 4,705.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,816.21 : 11,724.18 = 3,137.28 : x
  2. Step 2: Convert to fraction form
    7,816.21/11,724.18 = 3,137.28/x
  3. Step 3: Cross multiply
    7,816.21x = 11,724.18 × 3,137.28
  4. Step 4: Simplify right side
    7,816.21x = 36,782,045.65
  5. Step 5: Solve for x
    x = 36,782,045.65/7,816.21
  6. Step 6: Final answer
    x = 4,705.87

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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.