Home / 2,131.07-3,171.77-2,110.55

Finding the Fourth Proportional to 2,131.07, 3,171.77 and 2,110.55

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Solution

The fourth proportional to 2,131.07, 3,171.77 and 2,110.55 is: 3,141.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.07 : 3,171.77 = 2,110.55 : x
  2. Step 2: Convert to fraction form
    2,131.07/3,171.77 = 2,110.55/x
  3. Step 3: Cross multiply
    2,131.07x = 3,171.77 × 2,110.55
  4. Step 4: Simplify right side
    2,131.07x = 6,694,152.76
  5. Step 5: Solve for x
    x = 6,694,152.76/2,131.07
  6. Step 6: Final answer
    x = 3,141.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.