Home / 2,021.24-2,789.44-1,264.90

Finding the Fourth Proportional to 2,021.24, 2,789.44 and 1,264.90

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Solution

The fourth proportional to 2,021.24, 2,789.44 and 1,264.90 is: 1,745.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.24 : 2,789.44 = 1,264.90 : x
  2. Step 2: Convert to fraction form
    2,021.24/2,789.44 = 1,264.90/x
  3. Step 3: Cross multiply
    2,021.24x = 2,789.44 × 1,264.90
  4. Step 4: Simplify right side
    2,021.24x = 3,528,362.66
  5. Step 5: Solve for x
    x = 3,528,362.66/2,021.24
  6. Step 6: Final answer
    x = 1,745.64

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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.