Home / 2,643.19-3,965.33-911.59

Finding the Fourth Proportional to 2,643.19, 3,965.33 and 911.59

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Solution

The fourth proportional to 2,643.19, 3,965.33 and 911.59 is: 1,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.19 : 3,965.33 = 911.59 : x
  2. Step 2: Convert to fraction form
    2,643.19/3,965.33 = 911.59/x
  3. Step 3: Cross multiply
    2,643.19x = 3,965.33 × 911.59
  4. Step 4: Simplify right side
    2,643.19x = 3,614,755.17
  5. Step 5: Solve for x
    x = 3,614,755.17/2,643.19
  6. Step 6: Final answer
    x = 1,367.57

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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.