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Finding the Fourth Proportional to 8,998.20, 12,408.06 and 7,743.51

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Solution

The fourth proportional to 8,998.20, 12,408.06 and 7,743.51 is: 10,677.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,998.20 : 12,408.06 = 7,743.51 : x
  2. Step 2: Convert to fraction form
    8,998.20/12,408.06 = 7,743.51/x
  3. Step 3: Cross multiply
    8,998.20x = 12,408.06 × 7,743.51
  4. Step 4: Simplify right side
    8,998.20x = 96,081,936.69
  5. Step 5: Solve for x
    x = 96,081,936.69/8,998.20
  6. Step 6: Final answer
    x = 10,677.91

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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.