Home / 2,115.22-2,893.10-2,081.20

Finding the Fourth Proportional to 2,115.22, 2,893.10 and 2,081.20

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Solution

The fourth proportional to 2,115.22, 2,893.10 and 2,081.20 is: 2,846.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.22 : 2,893.10 = 2,081.20 : x
  2. Step 2: Convert to fraction form
    2,115.22/2,893.10 = 2,081.20/x
  3. Step 3: Cross multiply
    2,115.22x = 2,893.10 × 2,081.20
  4. Step 4: Simplify right side
    2,115.22x = 6,021,119.72
  5. Step 5: Solve for x
    x = 6,021,119.72/2,115.22
  6. Step 6: Final answer
    x = 2,846.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.