Home / 2,077.58-3,109.20-1,286.62

Finding the Fourth Proportional to 2,077.58, 3,109.20 and 1,286.62

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Solution

The fourth proportional to 2,077.58, 3,109.20 and 1,286.62 is: 1,925.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.58 : 3,109.20 = 1,286.62 : x
  2. Step 2: Convert to fraction form
    2,077.58/3,109.20 = 1,286.62/x
  3. Step 3: Cross multiply
    2,077.58x = 3,109.20 × 1,286.62
  4. Step 4: Simplify right side
    2,077.58x = 4,000,343.36
  5. Step 5: Solve for x
    x = 4,000,343.36/2,077.58
  6. Step 6: Final answer
    x = 1,925.48

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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.