Home / 8,431.50-12,647.38-3,809.10

Finding the Fourth Proportional to 8,431.50, 12,647.38 and 3,809.10

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Solution

The fourth proportional to 8,431.50, 12,647.38 and 3,809.10 is: 5,713.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.50 : 12,647.38 = 3,809.10 : x
  2. Step 2: Convert to fraction form
    8,431.50/12,647.38 = 3,809.10/x
  3. Step 3: Cross multiply
    8,431.50x = 12,647.38 × 3,809.10
  4. Step 4: Simplify right side
    8,431.50x = 48,175,135.16
  5. Step 5: Solve for x
    x = 48,175,135.16/8,431.50
  6. Step 6: Final answer
    x = 5,713.71

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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.