Home / 3,120.73-4,304.44-2,490.45

Finding the Fourth Proportional to 3,120.73, 4,304.44 and 2,490.45

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Solution

The fourth proportional to 3,120.73, 4,304.44 and 2,490.45 is: 3,435.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.73 : 4,304.44 = 2,490.45 : x
  2. Step 2: Convert to fraction form
    3,120.73/4,304.44 = 2,490.45/x
  3. Step 3: Cross multiply
    3,120.73x = 4,304.44 × 2,490.45
  4. Step 4: Simplify right side
    3,120.73x = 10,719,979.57
  5. Step 5: Solve for x
    x = 10,719,979.57/3,120.73
  6. Step 6: Final answer
    x = 3,435.09

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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.