Home / 5,141.30-7,715.55-2,221.70

Finding the Fourth Proportional to 5,141.30, 7,715.55 and 2,221.70

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Solution

The fourth proportional to 5,141.30, 7,715.55 and 2,221.70 is: 3,334.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,141.30 : 7,715.55 = 2,221.70 : x
  2. Step 2: Convert to fraction form
    5,141.30/7,715.55 = 2,221.70/x
  3. Step 3: Cross multiply
    5,141.30x = 7,715.55 × 2,221.70
  4. Step 4: Simplify right side
    5,141.30x = 17,141,637.44
  5. Step 5: Solve for x
    x = 17,141,637.44/5,141.30
  6. Step 6: Final answer
    x = 3,334.11

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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.