Home / 2,963.14-4,090.80-1,969.78

Finding the Fourth Proportional to 2,963.14, 4,090.80 and 1,969.78

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Solution

The fourth proportional to 2,963.14, 4,090.80 and 1,969.78 is: 2,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,963.14 : 4,090.80 = 1,969.78 : x
  2. Step 2: Convert to fraction form
    2,963.14/4,090.80 = 1,969.78/x
  3. Step 3: Cross multiply
    2,963.14x = 4,090.80 × 1,969.78
  4. Step 4: Simplify right side
    2,963.14x = 8,057,976.02
  5. Step 5: Solve for x
    x = 8,057,976.02/2,963.14
  6. Step 6: Final answer
    x = 2,719.40

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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.