Home / 8,109.16-11,189.96-4,571.70

Finding the Fourth Proportional to 8,109.16, 11,189.96 and 4,571.70

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Solution

The fourth proportional to 8,109.16, 11,189.96 and 4,571.70 is: 6,308.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.16 : 11,189.96 = 4,571.70 : x
  2. Step 2: Convert to fraction form
    8,109.16/11,189.96 = 4,571.70/x
  3. Step 3: Cross multiply
    8,109.16x = 11,189.96 × 4,571.70
  4. Step 4: Simplify right side
    8,109.16x = 51,157,140.13
  5. Step 5: Solve for x
    x = 51,157,140.13/8,109.16
  6. Step 6: Final answer
    x = 6,308.56

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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.