Home / 3,109.80-4,653.18-1,742.76

Finding the Fourth Proportional to 3,109.80, 4,653.18 and 1,742.76

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Solution

The fourth proportional to 3,109.80, 4,653.18 and 1,742.76 is: 2,607.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,109.80 : 4,653.18 = 1,742.76 : x
  2. Step 2: Convert to fraction form
    3,109.80/4,653.18 = 1,742.76/x
  3. Step 3: Cross multiply
    3,109.80x = 4,653.18 × 1,742.76
  4. Step 4: Simplify right side
    3,109.80x = 8,109,375.98
  5. Step 5: Solve for x
    x = 8,109,375.98/3,109.80
  6. Step 6: Final answer
    x = 2,607.68

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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.