Home / 8,424.90-12,638.97-2,581.56

Finding the Fourth Proportional to 8,424.90, 12,638.97 and 2,581.56

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Solution

The fourth proportional to 8,424.90, 12,638.97 and 2,581.56 is: 3,872.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.90 : 12,638.97 = 2,581.56 : x
  2. Step 2: Convert to fraction form
    8,424.90/12,638.97 = 2,581.56/x
  3. Step 3: Cross multiply
    8,424.90x = 12,638.97 × 2,581.56
  4. Step 4: Simplify right side
    8,424.90x = 32,628,259.39
  5. Step 5: Solve for x
    x = 32,628,259.39/8,424.90
  6. Step 6: Final answer
    x = 3,872.84

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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.