Home / 2,640.44-3,643.81-1,521.43

Finding the Fourth Proportional to 2,640.44, 3,643.81 and 1,521.43

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Solution

The fourth proportional to 2,640.44, 3,643.81 and 1,521.43 is: 2,099.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.44 : 3,643.81 = 1,521.43 : x
  2. Step 2: Convert to fraction form
    2,640.44/3,643.81 = 1,521.43/x
  3. Step 3: Cross multiply
    2,640.44x = 3,643.81 × 1,521.43
  4. Step 4: Simplify right side
    2,640.44x = 5,543,788.94
  5. Step 5: Solve for x
    x = 5,543,788.94/2,640.44
  6. Step 6: Final answer
    x = 2,099.57

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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.