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Finding the Fourth Proportional to 3,169.49, 4,754.19 and 860.99

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Solution

The fourth proportional to 3,169.49, 4,754.19 and 860.99 is: 1,291.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,169.49 : 4,754.19 = 860.99 : x
  2. Step 2: Convert to fraction form
    3,169.49/4,754.19 = 860.99/x
  3. Step 3: Cross multiply
    3,169.49x = 4,754.19 × 860.99
  4. Step 4: Simplify right side
    3,169.49x = 4,093,310.05
  5. Step 5: Solve for x
    x = 4,093,310.05/3,169.49
  6. Step 6: Final answer
    x = 1,291.47

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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.