Home / 2,479.62-3,422.34-1,431.75

Finding the Fourth Proportional to 2,479.62, 3,422.34 and 1,431.75

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Solution

The fourth proportional to 2,479.62, 3,422.34 and 1,431.75 is: 1,976.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.62 : 3,422.34 = 1,431.75 : x
  2. Step 2: Convert to fraction form
    2,479.62/3,422.34 = 1,431.75/x
  3. Step 3: Cross multiply
    2,479.62x = 3,422.34 × 1,431.75
  4. Step 4: Simplify right side
    2,479.62x = 4,899,935.30
  5. Step 5: Solve for x
    x = 4,899,935.30/2,479.62
  6. Step 6: Final answer
    x = 1,976.08

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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.