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Finding the Fourth Proportional to 8,333.75, 11,480.81 and 5,811.28

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Solution

The fourth proportional to 8,333.75, 11,480.81 and 5,811.28 is: 8,005.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,333.75 : 11,480.81 = 5,811.28 : x
  2. Step 2: Convert to fraction form
    8,333.75/11,480.81 = 5,811.28/x
  3. Step 3: Cross multiply
    8,333.75x = 11,480.81 × 5,811.28
  4. Step 4: Simplify right side
    8,333.75x = 66,718,143.78
  5. Step 5: Solve for x
    x = 66,718,143.78/8,333.75
  6. Step 6: Final answer
    x = 8,005.77

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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.