Home / 3,481.61-4,805.09-2,138.01

Finding the Fourth Proportional to 3,481.61, 4,805.09 and 2,138.01

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Solution

The fourth proportional to 3,481.61, 4,805.09 and 2,138.01 is: 2,950.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.61 : 4,805.09 = 2,138.01 : x
  2. Step 2: Convert to fraction form
    3,481.61/4,805.09 = 2,138.01/x
  3. Step 3: Cross multiply
    3,481.61x = 4,805.09 × 2,138.01
  4. Step 4: Simplify right side
    3,481.61x = 10,273,319.78
  5. Step 5: Solve for x
    x = 10,273,319.78/3,481.61
  6. Step 6: Final answer
    x = 2,950.74

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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.