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Finding the Fourth Proportional to 8,912.63, 13,363.99 and 3,646.22

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Solution

The fourth proportional to 8,912.63, 13,363.99 and 3,646.22 is: 5,467.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.63 : 13,363.99 = 3,646.22 : x
  2. Step 2: Convert to fraction form
    8,912.63/13,363.99 = 3,646.22/x
  3. Step 3: Cross multiply
    8,912.63x = 13,363.99 × 3,646.22
  4. Step 4: Simplify right side
    8,912.63x = 48,727,971.68
  5. Step 5: Solve for x
    x = 48,727,971.68/8,912.63
  6. Step 6: Final answer
    x = 5,467.29

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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.