Home / 8,109.68-11,191.36-4,572.89

Finding the Fourth Proportional to 8,109.68, 11,191.36 and 4,572.89

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Solution

The fourth proportional to 8,109.68, 11,191.36 and 4,572.89 is: 6,310.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.68 : 11,191.36 = 4,572.89 : x
  2. Step 2: Convert to fraction form
    8,109.68/11,191.36 = 4,572.89/x
  3. Step 3: Cross multiply
    8,109.68x = 11,191.36 × 4,572.89
  4. Step 4: Simplify right side
    8,109.68x = 51,176,891.92
  5. Step 5: Solve for x
    x = 51,176,891.92/8,109.68
  6. Step 6: Final answer
    x = 6,310.59

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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.