Home / 2,081.20-2,872.55-1,197.51

Finding the Fourth Proportional to 2,081.20, 2,872.55 and 1,197.51

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Solution

The fourth proportional to 2,081.20, 2,872.55 and 1,197.51 is: 1,652.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,081.20 : 2,872.55 = 1,197.51 : x
  2. Step 2: Convert to fraction form
    2,081.20/2,872.55 = 1,197.51/x
  3. Step 3: Cross multiply
    2,081.20x = 2,872.55 × 1,197.51
  4. Step 4: Simplify right side
    2,081.20x = 3,439,907.35
  5. Step 5: Solve for x
    x = 3,439,907.35/2,081.20
  6. Step 6: Final answer
    x = 1,652.85

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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.