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Finding the Fourth Proportional to 8,807.72, 13,207.38 and 5,111.09

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Solution

The fourth proportional to 8,807.72, 13,207.38 and 5,111.09 is: 7,664.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,807.72 : 13,207.38 = 5,111.09 : x
  2. Step 2: Convert to fraction form
    8,807.72/13,207.38 = 5,111.09/x
  3. Step 3: Cross multiply
    8,807.72x = 13,207.38 × 5,111.09
  4. Step 4: Simplify right side
    8,807.72x = 67,504,041.81
  5. Step 5: Solve for x
    x = 67,504,041.81/8,807.72
  6. Step 6: Final answer
    x = 7,664.19

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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.