Home / 7,280.92-10,921.49-2,086.80

Finding the Fourth Proportional to 7,280.92, 10,921.49 and 2,086.80

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Solution

The fourth proportional to 7,280.92, 10,921.49 and 2,086.80 is: 3,130.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,280.92 : 10,921.49 = 2,086.80 : x
  2. Step 2: Convert to fraction form
    7,280.92/10,921.49 = 2,086.80/x
  3. Step 3: Cross multiply
    7,280.92x = 10,921.49 × 2,086.80
  4. Step 4: Simplify right side
    7,280.92x = 22,790,965.33
  5. Step 5: Solve for x
    x = 22,790,965.33/7,280.92
  6. Step 6: Final answer
    x = 3,130.23

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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.