Home / 7,428.75-11,144.30-3,531.84

Finding the Fourth Proportional to 7,428.75, 11,144.30 and 3,531.84

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Solution

The fourth proportional to 7,428.75, 11,144.30 and 3,531.84 is: 5,298.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,428.75 : 11,144.30 = 3,531.84 : x
  2. Step 2: Convert to fraction form
    7,428.75/11,144.30 = 3,531.84/x
  3. Step 3: Cross multiply
    7,428.75x = 11,144.30 × 3,531.84
  4. Step 4: Simplify right side
    7,428.75x = 39,359,866.85
  5. Step 5: Solve for x
    x = 39,359,866.85/7,428.75
  6. Step 6: Final answer
    x = 5,298.32

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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.