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Finding the Fourth Proportional to 3,379.60, 5,069.16 and 914.56

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Solution

The fourth proportional to 3,379.60, 5,069.16 and 914.56 is: 1,371.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,379.60 : 5,069.16 = 914.56 : x
  2. Step 2: Convert to fraction form
    3,379.60/5,069.16 = 914.56/x
  3. Step 3: Cross multiply
    3,379.60x = 5,069.16 × 914.56
  4. Step 4: Simplify right side
    3,379.60x = 4,636,050.97
  5. Step 5: Solve for x
    x = 4,636,050.97/3,379.60
  6. Step 6: Final answer
    x = 1,371.78

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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.