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Finding the Fourth Proportional to 3,074.74, 4,611.87 and 1,319.74

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Solution

The fourth proportional to 3,074.74, 4,611.87 and 1,319.74 is: 1,979.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,074.74 : 4,611.87 = 1,319.74 : x
  2. Step 2: Convert to fraction form
    3,074.74/4,611.87 = 1,319.74/x
  3. Step 3: Cross multiply
    3,074.74x = 4,611.87 × 1,319.74
  4. Step 4: Simplify right side
    3,074.74x = 6,086,469.31
  5. Step 5: Solve for x
    x = 6,086,469.31/3,074.74
  6. Step 6: Final answer
    x = 1,979.51

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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.