Home / 8,317.50-12,469.26-3,390.68

Finding the Fourth Proportional to 8,317.50, 12,469.26 and 3,390.68

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Solution

The fourth proportional to 8,317.50, 12,469.26 and 3,390.68 is: 5,083.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.50 : 12,469.26 = 3,390.68 : x
  2. Step 2: Convert to fraction form
    8,317.50/12,469.26 = 3,390.68/x
  3. Step 3: Cross multiply
    8,317.50x = 12,469.26 × 3,390.68
  4. Step 4: Simplify right side
    8,317.50x = 42,279,208.15
  5. Step 5: Solve for x
    x = 42,279,208.15/8,317.50
  6. Step 6: Final answer
    x = 5,083.16

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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.