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Finding the Fourth Proportional to 3,624.99, 5,428.80 and 3,102

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Solution

The fourth proportional to 3,624.99, 5,428.80 and 3,102 is: 4,645.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,624.99 : 5,428.80 = 3,102 : x
  2. Step 2: Convert to fraction form
    3,624.99/5,428.80 = 3,102/x
  3. Step 3: Cross multiply
    3,624.99x = 5,428.80 × 3,102
  4. Step 4: Simplify right side
    3,624.99x = 16,840,137.60
  5. Step 5: Solve for x
    x = 16,840,137.60/3,624.99
  6. Step 6: Final answer
    x = 4,645.57

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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.