Home / 8,108.51-11,189.75-4,571.78

Finding the Fourth Proportional to 8,108.51, 11,189.75 and 4,571.78

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Solution

The fourth proportional to 8,108.51, 11,189.75 and 4,571.78 is: 6,309.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,108.51 : 11,189.75 = 4,571.78 : x
  2. Step 2: Convert to fraction form
    8,108.51/11,189.75 = 4,571.78/x
  3. Step 3: Cross multiply
    8,108.51x = 11,189.75 × 4,571.78
  4. Step 4: Simplify right side
    8,108.51x = 51,156,996.45
  5. Step 5: Solve for x
    x = 51,156,996.45/8,108.51
  6. Step 6: Final answer
    x = 6,309.05

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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.