Home / 6,979.87-10,469.78-6,629.49

Finding the Fourth Proportional to 6,979.87, 10,469.78 and 6,629.49

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Solution

The fourth proportional to 6,979.87, 10,469.78 and 6,629.49 is: 9,944.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.87 : 10,469.78 = 6,629.49 : x
  2. Step 2: Convert to fraction form
    6,979.87/10,469.78 = 6,629.49/x
  3. Step 3: Cross multiply
    6,979.87x = 10,469.78 × 6,629.49
  4. Step 4: Simplify right side
    6,979.87x = 69,409,301.81
  5. Step 5: Solve for x
    x = 69,409,301.81/6,979.87
  6. Step 6: Final answer
    x = 9,944.21

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1.5x scale

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.