Home / 1,392.41-2,078.66-1,343.73

Finding the Fourth Proportional to 1,392.41, 2,078.66 and 1,343.73

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Solution

The fourth proportional to 1,392.41, 2,078.66 and 1,343.73 is: 2,005.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.41 : 2,078.66 = 1,343.73 : x
  2. Step 2: Convert to fraction form
    1,392.41/2,078.66 = 1,343.73/x
  3. Step 3: Cross multiply
    1,392.41x = 2,078.66 × 1,343.73
  4. Step 4: Simplify right side
    1,392.41x = 2,793,157.80
  5. Step 5: Solve for x
    x = 2,793,157.80/1,392.41
  6. Step 6: Final answer
    x = 2,005.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.