Home / 3,810.05-5,257.85-2,131.64

Finding the Fourth Proportional to 3,810.05, 5,257.85 and 2,131.64

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Solution

The fourth proportional to 3,810.05, 5,257.85 and 2,131.64 is: 2,941.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.05 : 5,257.85 = 2,131.64 : x
  2. Step 2: Convert to fraction form
    3,810.05/5,257.85 = 2,131.64/x
  3. Step 3: Cross multiply
    3,810.05x = 5,257.85 × 2,131.64
  4. Step 4: Simplify right side
    3,810.05x = 11,207,826.14
  5. Step 5: Solve for x
    x = 11,207,826.14/3,810.05
  6. Step 6: Final answer
    x = 2,941.65

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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.