Home / 2,081.70-2,872.80-1,197.54

Finding the Fourth Proportional to 2,081.70, 2,872.80 and 1,197.54

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Solution

The fourth proportional to 2,081.70, 2,872.80 and 1,197.54 is: 1,652.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.70 : 2,872.80 = 1,197.54 : x
  2. Step 2: Convert to fraction form
    2,081.70/2,872.80 = 1,197.54/x
  3. Step 3: Cross multiply
    2,081.70x = 2,872.80 × 1,197.54
  4. Step 4: Simplify right side
    2,081.70x = 3,440,292.91
  5. Step 5: Solve for x
    x = 3,440,292.91/2,081.70
  6. Step 6: Final answer
    x = 1,652.64

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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.