Home / 7,769.85-11,641.82-5,457.21

Finding the Fourth Proportional to 7,769.85, 11,641.82 and 5,457.21

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Solution

The fourth proportional to 7,769.85, 11,641.82 and 5,457.21 is: 8,176.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,769.85 : 11,641.82 = 5,457.21 : x
  2. Step 2: Convert to fraction form
    7,769.85/11,641.82 = 5,457.21/x
  3. Step 3: Cross multiply
    7,769.85x = 11,641.82 × 5,457.21
  4. Step 4: Simplify right side
    7,769.85x = 63,531,829.24
  5. Step 5: Solve for x
    x = 63,531,829.24/7,769.85
  6. Step 6: Final answer
    x = 8,176.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.