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Finding the Fourth Proportional to 2,965.85, 4,449.03 and 774.57

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Solution

The fourth proportional to 2,965.85, 4,449.03 and 774.57 is: 1,161.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,965.85 : 4,449.03 = 774.57 : x
  2. Step 2: Convert to fraction form
    2,965.85/4,449.03 = 774.57/x
  3. Step 3: Cross multiply
    2,965.85x = 4,449.03 × 774.57
  4. Step 4: Simplify right side
    2,965.85x = 3,446,085.17
  5. Step 5: Solve for x
    x = 3,446,085.17/2,965.85
  6. Step 6: Final answer
    x = 1,161.92

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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.