Home / 7,087.68-10,631.69-3,138.09

Finding the Fourth Proportional to 7,087.68, 10,631.69 and 3,138.09

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Solution

The fourth proportional to 7,087.68, 10,631.69 and 3,138.09 is: 4,707.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,087.68 : 10,631.69 = 3,138.09 : x
  2. Step 2: Convert to fraction form
    7,087.68/10,631.69 = 3,138.09/x
  3. Step 3: Cross multiply
    7,087.68x = 10,631.69 × 3,138.09
  4. Step 4: Simplify right side
    7,087.68x = 33,363,184.38
  5. Step 5: Solve for x
    x = 33,363,184.38/7,087.68
  6. Step 6: Final answer
    x = 4,707.21

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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.