Home / 2,439.90-3,367.66-1,392.56

Finding the Fourth Proportional to 2,439.90, 3,367.66 and 1,392.56

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Solution

The fourth proportional to 2,439.90, 3,367.66 and 1,392.56 is: 1,922.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.90 : 3,367.66 = 1,392.56 : x
  2. Step 2: Convert to fraction form
    2,439.90/3,367.66 = 1,392.56/x
  3. Step 3: Cross multiply
    2,439.90x = 3,367.66 × 1,392.56
  4. Step 4: Simplify right side
    2,439.90x = 4,689,668.61
  5. Step 5: Solve for x
    x = 4,689,668.61/2,439.90
  6. Step 6: Final answer
    x = 1,922.07

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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.