Home / 3,161.47-4,742.21-1,756.78

Finding the Fourth Proportional to 3,161.47, 4,742.21 and 1,756.78

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Solution

The fourth proportional to 3,161.47, 4,742.21 and 1,756.78 is: 2,635.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.47 : 4,742.21 = 1,756.78 : x
  2. Step 2: Convert to fraction form
    3,161.47/4,742.21 = 1,756.78/x
  3. Step 3: Cross multiply
    3,161.47x = 4,742.21 × 1,756.78
  4. Step 4: Simplify right side
    3,161.47x = 8,331,010.90
  5. Step 5: Solve for x
    x = 8,331,010.90/3,161.47
  6. Step 6: Final answer
    x = 2,635.17

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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.