Home / 8,313.28-11,471.29-5,288.75

Finding the Fourth Proportional to 8,313.28, 11,471.29 and 5,288.75

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Solution

The fourth proportional to 8,313.28, 11,471.29 and 5,288.75 is: 7,297.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,313.28 : 11,471.29 = 5,288.75 : x
  2. Step 2: Convert to fraction form
    8,313.28/11,471.29 = 5,288.75/x
  3. Step 3: Cross multiply
    8,313.28x = 11,471.29 × 5,288.75
  4. Step 4: Simplify right side
    8,313.28x = 60,668,724.33
  5. Step 5: Solve for x
    x = 60,668,724.33/8,313.28
  6. Step 6: Final answer
    x = 7,297.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.