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Finding the Fourth Proportional to 3,379.84, 5,071.52 and 1,299.68

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Solution

The fourth proportional to 3,379.84, 5,071.52 and 1,299.68 is: 1,950.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.84 : 5,071.52 = 1,299.68 : x
  2. Step 2: Convert to fraction form
    3,379.84/5,071.52 = 1,299.68/x
  3. Step 3: Cross multiply
    3,379.84x = 5,071.52 × 1,299.68
  4. Step 4: Simplify right side
    3,379.84x = 6,591,353.11
  5. Step 5: Solve for x
    x = 6,591,353.11/3,379.84
  6. Step 6: Final answer
    x = 1,950.20

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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.