Home / 8,109.20-11,189.18-4,571.73

Finding the Fourth Proportional to 8,109.20, 11,189.18 and 4,571.73

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Solution

The fourth proportional to 8,109.20, 11,189.18 and 4,571.73 is: 6,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.20 : 11,189.18 = 4,571.73 : x
  2. Step 2: Convert to fraction form
    8,109.20/11,189.18 = 4,571.73/x
  3. Step 3: Cross multiply
    8,109.20x = 11,189.18 × 4,571.73
  4. Step 4: Simplify right side
    8,109.20x = 51,153,887.02
  5. Step 5: Solve for x
    x = 51,153,887.02/8,109.20
  6. Step 6: Final answer
    x = 6,308.13

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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.