Home / 8,117.21-12,161.47-5,640.44

Finding the Fourth Proportional to 8,117.21, 12,161.47 and 5,640.44

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Solution

The fourth proportional to 8,117.21, 12,161.47 and 5,640.44 is: 8,450.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.21 : 12,161.47 = 5,640.44 : x
  2. Step 2: Convert to fraction form
    8,117.21/12,161.47 = 5,640.44/x
  3. Step 3: Cross multiply
    8,117.21x = 12,161.47 × 5,640.44
  4. Step 4: Simplify right side
    8,117.21x = 68,595,961.65
  5. Step 5: Solve for x
    x = 68,595,961.65/8,117.21
  6. Step 6: Final answer
    x = 8,450.68

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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.