Home / 8,997.09-12,418.70-5,221.19

Finding the Fourth Proportional to 8,997.09, 12,418.70 and 5,221.19

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Solution

The fourth proportional to 8,997.09, 12,418.70 and 5,221.19 is: 7,206.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.09 : 12,418.70 = 5,221.19 : x
  2. Step 2: Convert to fraction form
    8,997.09/12,418.70 = 5,221.19/x
  3. Step 3: Cross multiply
    8,997.09x = 12,418.70 × 5,221.19
  4. Step 4: Simplify right side
    8,997.09x = 64,840,304.05
  5. Step 5: Solve for x
    x = 64,840,304.05/8,997.09
  6. Step 6: Final answer
    x = 7,206.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.