Home / 8,105.13-11,185.07-4,379.13

Finding the Fourth Proportional to 8,105.13, 11,185.07 and 4,379.13

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Solution

The fourth proportional to 8,105.13, 11,185.07 and 4,379.13 is: 6,043.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.13 : 11,185.07 = 4,379.13 : x
  2. Step 2: Convert to fraction form
    8,105.13/11,185.07 = 4,379.13/x
  3. Step 3: Cross multiply
    8,105.13x = 11,185.07 × 4,379.13
  4. Step 4: Simplify right side
    8,105.13x = 48,980,875.59
  5. Step 5: Solve for x
    x = 48,980,875.59/8,105.13
  6. Step 6: Final answer
    x = 6,043.19

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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.