Home / 8,431.44-12,637.68-3,161.34

Finding the Fourth Proportional to 8,431.44, 12,637.68 and 3,161.34

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Solution

The fourth proportional to 8,431.44, 12,637.68 and 3,161.34 is: 4,738.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.44 : 12,637.68 = 3,161.34 : x
  2. Step 2: Convert to fraction form
    8,431.44/12,637.68 = 3,161.34/x
  3. Step 3: Cross multiply
    8,431.44x = 12,637.68 × 3,161.34
  4. Step 4: Simplify right side
    8,431.44x = 39,952,003.29
  5. Step 5: Solve for x
    x = 39,952,003.29/8,431.44
  6. Step 6: Final answer
    x = 4,738.46

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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.