Home / 3,120.29-4,683.61-1,561.43

Finding the Fourth Proportional to 3,120.29, 4,683.61 and 1,561.43

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Solution

The fourth proportional to 3,120.29, 4,683.61 and 1,561.43 is: 2,343.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.29 : 4,683.61 = 1,561.43 : x
  2. Step 2: Convert to fraction form
    3,120.29/4,683.61 = 1,561.43/x
  3. Step 3: Cross multiply
    3,120.29x = 4,683.61 × 1,561.43
  4. Step 4: Simplify right side
    3,120.29x = 7,313,105.74
  5. Step 5: Solve for x
    x = 7,313,105.74/3,120.29
  6. Step 6: Final answer
    x = 2,343.73

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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.