Home / 2,810.85-3,878.33-1,631.22

Finding the Fourth Proportional to 2,810.85, 3,878.33 and 1,631.22

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Solution

The fourth proportional to 2,810.85, 3,878.33 and 1,631.22 is: 2,250.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.85 : 3,878.33 = 1,631.22 : x
  2. Step 2: Convert to fraction form
    2,810.85/3,878.33 = 1,631.22/x
  3. Step 3: Cross multiply
    2,810.85x = 3,878.33 × 1,631.22
  4. Step 4: Simplify right side
    2,810.85x = 6,326,401.31
  5. Step 5: Solve for x
    x = 6,326,401.31/2,810.85
  6. Step 6: Final answer
    x = 2,250.71

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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.