Home / 2,810.45-3,878.62-1,691.37

Finding the Fourth Proportional to 2,810.45, 3,878.62 and 1,691.37

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Solution

The fourth proportional to 2,810.45, 3,878.62 and 1,691.37 is: 2,334.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.45 : 3,878.62 = 1,691.37 : x
  2. Step 2: Convert to fraction form
    2,810.45/3,878.62 = 1,691.37/x
  3. Step 3: Cross multiply
    2,810.45x = 3,878.62 × 1,691.37
  4. Step 4: Simplify right side
    2,810.45x = 6,560,177.28
  5. Step 5: Solve for x
    x = 6,560,177.28/2,810.45
  6. Step 6: Final answer
    x = 2,334.21

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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.