Home / 2,081.31-2,871.97-1,197.40

Finding the Fourth Proportional to 2,081.31, 2,871.97 and 1,197.40

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Solution

The fourth proportional to 2,081.31, 2,871.97 and 1,197.40 is: 1,652.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.31 : 2,871.97 = 1,197.40 : x
  2. Step 2: Convert to fraction form
    2,081.31/2,871.97 = 1,197.40/x
  3. Step 3: Cross multiply
    2,081.31x = 2,871.97 × 1,197.40
  4. Step 4: Simplify right side
    2,081.31x = 3,438,896.88
  5. Step 5: Solve for x
    x = 3,438,896.88/2,081.31
  6. Step 6: Final answer
    x = 1,652.28

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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.