Home / 5,123.84-7,679.68-2,195.96

Finding the Fourth Proportional to 5,123.84, 7,679.68 and 2,195.96

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Solution

The fourth proportional to 5,123.84, 7,679.68 and 2,195.96 is: 3,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123.84 : 7,679.68 = 2,195.96 : x
  2. Step 2: Convert to fraction form
    5,123.84/7,679.68 = 2,195.96/x
  3. Step 3: Cross multiply
    5,123.84x = 7,679.68 × 2,195.96
  4. Step 4: Simplify right side
    5,123.84x = 16,864,270.09
  5. Step 5: Solve for x
    x = 16,864,270.09/5,123.84
  6. Step 6: Final answer
    x = 3,291.33

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1.5x scale

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.