Home / 2,479.71-3,422.75-1,693.74

Finding the Fourth Proportional to 2,479.71, 3,422.75 and 1,693.74

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Solution

The fourth proportional to 2,479.71, 3,422.75 and 1,693.74 is: 2,337.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,479.71 : 3,422.75 = 1,693.74 : x
  2. Step 2: Convert to fraction form
    2,479.71/3,422.75 = 1,693.74/x
  3. Step 3: Cross multiply
    2,479.71x = 3,422.75 × 1,693.74
  4. Step 4: Simplify right side
    2,479.71x = 5,797,240.12
  5. Step 5: Solve for x
    x = 5,797,240.12/2,479.71
  6. Step 6: Final answer
    x = 2,337.87

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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.