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Finding the Fourth Proportional to 8,813.92, 13,210.80 and 3,876.16

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Solution

The fourth proportional to 8,813.92, 13,210.80 and 3,876.16 is: 5,809.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.92 : 13,210.80 = 3,876.16 : x
  2. Step 2: Convert to fraction form
    8,813.92/13,210.80 = 3,876.16/x
  3. Step 3: Cross multiply
    8,813.92x = 13,210.80 × 3,876.16
  4. Step 4: Simplify right side
    8,813.92x = 51,207,174.53
  5. Step 5: Solve for x
    x = 51,207,174.53/8,813.92
  6. Step 6: Final answer
    x = 5,809.81

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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.