Home / 2,012.42-2,778.44-1,640.30

Finding the Fourth Proportional to 2,012.42, 2,778.44 and 1,640.30

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Solution

The fourth proportional to 2,012.42, 2,778.44 and 1,640.30 is: 2,264.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,012.42 : 2,778.44 = 1,640.30 : x
  2. Step 2: Convert to fraction form
    2,012.42/2,778.44 = 1,640.30/x
  3. Step 3: Cross multiply
    2,012.42x = 2,778.44 × 1,640.30
  4. Step 4: Simplify right side
    2,012.42x = 4,557,453.04
  5. Step 5: Solve for x
    x = 4,557,453.04/2,012.42
  6. Step 6: Final answer
    x = 2,264.66

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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.