Home / 7,137.13-10,707.68-2,979.10

Finding the Fourth Proportional to 7,137.13, 10,707.68 and 2,979.10

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Solution

The fourth proportional to 7,137.13, 10,707.68 and 2,979.10 is: 4,469.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.13 : 10,707.68 = 2,979.10 : x
  2. Step 2: Convert to fraction form
    7,137.13/10,707.68 = 2,979.10/x
  3. Step 3: Cross multiply
    7,137.13x = 10,707.68 × 2,979.10
  4. Step 4: Simplify right side
    7,137.13x = 31,899,249.49
  5. Step 5: Solve for x
    x = 31,899,249.49/7,137.13
  6. Step 6: Final answer
    x = 4,469.48

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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.