Home / 2,085.10-3,122.36-1,251.64

Finding the Fourth Proportional to 2,085.10, 3,122.36 and 1,251.64

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Solution

The fourth proportional to 2,085.10, 3,122.36 and 1,251.64 is: 1,874.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.10 : 3,122.36 = 1,251.64 : x
  2. Step 2: Convert to fraction form
    2,085.10/3,122.36 = 1,251.64/x
  3. Step 3: Cross multiply
    2,085.10x = 3,122.36 × 1,251.64
  4. Step 4: Simplify right side
    2,085.10x = 3,908,078.86
  5. Step 5: Solve for x
    x = 3,908,078.86/2,085.10
  6. Step 6: Final answer
    x = 1,874.29

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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.