Home / 3,098.62-4,275.61-1,980.55

Finding the Fourth Proportional to 3,098.62, 4,275.61 and 1,980.55

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Solution

The fourth proportional to 3,098.62, 4,275.61 and 1,980.55 is: 2,732.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,098.62 : 4,275.61 = 1,980.55 : x
  2. Step 2: Convert to fraction form
    3,098.62/4,275.61 = 1,980.55/x
  3. Step 3: Cross multiply
    3,098.62x = 4,275.61 × 1,980.55
  4. Step 4: Simplify right side
    3,098.62x = 8,468,059.39
  5. Step 5: Solve for x
    x = 8,468,059.39/3,098.62
  6. Step 6: Final answer
    x = 2,732.85

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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.