Home / 2,131.23-3,197.29-899.22

Finding the Fourth Proportional to 2,131.23, 3,197.29 and 899.22

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Solution

The fourth proportional to 2,131.23, 3,197.29 and 899.22 is: 1,349.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.23 : 3,197.29 = 899.22 : x
  2. Step 2: Convert to fraction form
    2,131.23/3,197.29 = 899.22/x
  3. Step 3: Cross multiply
    2,131.23x = 3,197.29 × 899.22
  4. Step 4: Simplify right side
    2,131.23x = 2,875,067.11
  5. Step 5: Solve for x
    x = 2,875,067.11/2,131.23
  6. Step 6: Final answer
    x = 1,349.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.