Home / 2,619.11-3,614.40-1,440.19

Finding the Fourth Proportional to 2,619.11, 3,614.40 and 1,440.19

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Solution

The fourth proportional to 2,619.11, 3,614.40 and 1,440.19 is: 1,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,619.11 : 3,614.40 = 1,440.19 : x
  2. Step 2: Convert to fraction form
    2,619.11/3,614.40 = 1,440.19/x
  3. Step 3: Cross multiply
    2,619.11x = 3,614.40 × 1,440.19
  4. Step 4: Simplify right side
    2,619.11x = 5,205,408.30
  5. Step 5: Solve for x
    x = 5,205,408.30/2,619.11
  6. Step 6: Final answer
    x = 1,987.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.