Home / 3,161.76-4,743.18-1,407.39

Finding the Fourth Proportional to 3,161.76, 4,743.18 and 1,407.39

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Solution

The fourth proportional to 3,161.76, 4,743.18 and 1,407.39 is: 2,111.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.76 : 4,743.18 = 1,407.39 : x
  2. Step 2: Convert to fraction form
    3,161.76/4,743.18 = 1,407.39/x
  3. Step 3: Cross multiply
    3,161.76x = 4,743.18 × 1,407.39
  4. Step 4: Simplify right side
    3,161.76x = 6,675,504.10
  5. Step 5: Solve for x
    x = 6,675,504.10/3,161.76
  6. Step 6: Final answer
    x = 2,111.33

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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.