Home / 5,416.84-8,128.49-3,109.96

Finding the Fourth Proportional to 5,416.84, 8,128.49 and 3,109.96

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Solution

The fourth proportional to 5,416.84, 8,128.49 and 3,109.96 is: 4,666.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.84 : 8,128.49 = 3,109.96 : x
  2. Step 2: Convert to fraction form
    5,416.84/8,128.49 = 3,109.96/x
  3. Step 3: Cross multiply
    5,416.84x = 8,128.49 × 3,109.96
  4. Step 4: Simplify right side
    5,416.84x = 25,279,278.76
  5. Step 5: Solve for x
    x = 25,279,278.76/5,416.84
  6. Step 6: Final answer
    x = 4,666.79

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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.