Home / 3,161.76-4,742.61-1,081.74

Finding the Fourth Proportional to 3,161.76, 4,742.61 and 1,081.74

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Solution

The fourth proportional to 3,161.76, 4,742.61 and 1,081.74 is: 1,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.76 : 4,742.61 = 1,081.74 : x
  2. Step 2: Convert to fraction form
    3,161.76/4,742.61 = 1,081.74/x
  3. Step 3: Cross multiply
    3,161.76x = 4,742.61 × 1,081.74
  4. Step 4: Simplify right side
    3,161.76x = 5,130,270.94
  5. Step 5: Solve for x
    x = 5,130,270.94/3,161.76
  6. Step 6: Final answer
    x = 1,622.60

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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.