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Finding the Fourth Proportional to 8,665.20, 12,998.25 and 2,822.22

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Solution

The fourth proportional to 8,665.20, 12,998.25 and 2,822.22 is: 4,233.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,665.20 : 12,998.25 = 2,822.22 : x
  2. Step 2: Convert to fraction form
    8,665.20/12,998.25 = 2,822.22/x
  3. Step 3: Cross multiply
    8,665.20x = 12,998.25 × 2,822.22
  4. Step 4: Simplify right side
    8,665.20x = 36,683,921.12
  5. Step 5: Solve for x
    x = 36,683,921.12/8,665.20
  6. Step 6: Final answer
    x = 4,233.48

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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.