Home / 2,131.12-3,195.80-899.08

Finding the Fourth Proportional to 2,131.12, 3,195.80 and 899.08

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Solution

The fourth proportional to 2,131.12, 3,195.80 and 899.08 is: 1,348.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.12 : 3,195.80 = 899.08 : x
  2. Step 2: Convert to fraction form
    2,131.12/3,195.80 = 899.08/x
  3. Step 3: Cross multiply
    2,131.12x = 3,195.80 × 899.08
  4. Step 4: Simplify right side
    2,131.12x = 2,873,279.86
  5. Step 5: Solve for x
    x = 2,873,279.86/2,131.12
  6. Step 6: Final answer
    x = 1,348.25

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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.