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Finding the Fourth Proportional to 8,914.86, 13,372.06 and 5,172.22

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Solution

The fourth proportional to 8,914.86, 13,372.06 and 5,172.22 is: 7,758.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,914.86 : 13,372.06 = 5,172.22 : x
  2. Step 2: Convert to fraction form
    8,914.86/13,372.06 = 5,172.22/x
  3. Step 3: Cross multiply
    8,914.86x = 13,372.06 × 5,172.22
  4. Step 4: Simplify right side
    8,914.86x = 69,163,169.31
  5. Step 5: Solve for x
    x = 69,163,169.31/8,914.86
  6. Step 6: Final answer
    x = 7,758.19

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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.