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Finding the Fourth Proportional to 8,807.84, 13,212.97 and 5,111.81

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Solution

The fourth proportional to 8,807.84, 13,212.97 and 5,111.81 is: 7,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.84 : 13,212.97 = 5,111.81 : x
  2. Step 2: Convert to fraction form
    8,807.84/13,212.97 = 5,111.81/x
  3. Step 3: Cross multiply
    8,807.84x = 13,212.97 × 5,111.81
  4. Step 4: Simplify right side
    8,807.84x = 67,542,191.63
  5. Step 5: Solve for x
    x = 67,542,191.63/8,807.84
  6. Step 6: Final answer
    x = 7,668.42

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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.