Home / 1,392.35-2,086.90-1,376.96

Finding the Fourth Proportional to 1,392.35, 2,086.90 and 1,376.96

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Solution

The fourth proportional to 1,392.35, 2,086.90 and 1,376.96 is: 2,063.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,392.35 : 2,086.90 = 1,376.96 : x
  2. Step 2: Convert to fraction form
    1,392.35/2,086.90 = 1,376.96/x
  3. Step 3: Cross multiply
    1,392.35x = 2,086.90 × 1,376.96
  4. Step 4: Simplify right side
    1,392.35x = 2,873,563.95
  5. Step 5: Solve for x
    x = 2,873,563.95/1,392.35
  6. Step 6: Final answer
    x = 2,063.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.