Home / 2,687.01-3,708.24-1,789.21

Finding the Fourth Proportional to 2,687.01, 3,708.24 and 1,789.21

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Solution

The fourth proportional to 2,687.01, 3,708.24 and 1,789.21 is: 2,469.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.01 : 3,708.24 = 1,789.21 : x
  2. Step 2: Convert to fraction form
    2,687.01/3,708.24 = 1,789.21/x
  3. Step 3: Cross multiply
    2,687.01x = 3,708.24 × 1,789.21
  4. Step 4: Simplify right side
    2,687.01x = 6,634,820.09
  5. Step 5: Solve for x
    x = 6,634,820.09/2,687.01
  6. Step 6: Final answer
    x = 2,469.22

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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.