Home / 2,081.36-2,872.42-1,197.20

Finding the Fourth Proportional to 2,081.36, 2,872.42 and 1,197.20

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Solution

The fourth proportional to 2,081.36, 2,872.42 and 1,197.20 is: 1,652.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.36 : 2,872.42 = 1,197.20 : x
  2. Step 2: Convert to fraction form
    2,081.36/2,872.42 = 1,197.20/x
  3. Step 3: Cross multiply
    2,081.36x = 2,872.42 × 1,197.20
  4. Step 4: Simplify right side
    2,081.36x = 3,438,861.22
  5. Step 5: Solve for x
    x = 3,438,861.22/2,081.36
  6. Step 6: Final answer
    x = 1,652.22

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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.