Home / 3,120.48-4,308.26-1,943.15

Finding the Fourth Proportional to 3,120.48, 4,308.26 and 1,943.15

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Solution

The fourth proportional to 3,120.48, 4,308.26 and 1,943.15 is: 2,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.48 : 4,308.26 = 1,943.15 : x
  2. Step 2: Convert to fraction form
    3,120.48/4,308.26 = 1,943.15/x
  3. Step 3: Cross multiply
    3,120.48x = 4,308.26 × 1,943.15
  4. Step 4: Simplify right side
    3,120.48x = 8,371,564.16
  5. Step 5: Solve for x
    x = 8,371,564.16/3,120.48
  6. Step 6: Final answer
    x = 2,682.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.