Home / 8,109.99-11,190.15-6,223.77

Finding the Fourth Proportional to 8,109.99, 11,190.15 and 6,223.77

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Solution

The fourth proportional to 8,109.99, 11,190.15 and 6,223.77 is: 8,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.99 : 11,190.15 = 6,223.77 : x
  2. Step 2: Convert to fraction form
    8,109.99/11,190.15 = 6,223.77/x
  3. Step 3: Cross multiply
    8,109.99x = 11,190.15 × 6,223.77
  4. Step 4: Simplify right side
    8,109.99x = 69,644,919.87
  5. Step 5: Solve for x
    x = 69,644,919.87/8,109.99
  6. Step 6: Final answer
    x = 8,587.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.