Home / 3,161.45-4,742.69-1,187.24

Finding the Fourth Proportional to 3,161.45, 4,742.69 and 1,187.24

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Solution

The fourth proportional to 3,161.45, 4,742.69 and 1,187.24 is: 1,781.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.45 : 4,742.69 = 1,187.24 : x
  2. Step 2: Convert to fraction form
    3,161.45/4,742.69 = 1,187.24/x
  3. Step 3: Cross multiply
    3,161.45x = 4,742.69 × 1,187.24
  4. Step 4: Simplify right side
    3,161.45x = 5,630,688.30
  5. Step 5: Solve for x
    x = 5,630,688.30/3,161.45
  6. Step 6: Final answer
    x = 1,781.04

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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.