Home / 2,939.79-4,057.09-1,943.32

Finding the Fourth Proportional to 2,939.79, 4,057.09 and 1,943.32

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Solution

The fourth proportional to 2,939.79, 4,057.09 and 1,943.32 is: 2,681.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.79 : 4,057.09 = 1,943.32 : x
  2. Step 2: Convert to fraction form
    2,939.79/4,057.09 = 1,943.32/x
  3. Step 3: Cross multiply
    2,939.79x = 4,057.09 × 1,943.32
  4. Step 4: Simplify right side
    2,939.79x = 7,884,203.85
  5. Step 5: Solve for x
    x = 7,884,203.85/2,939.79
  6. Step 6: Final answer
    x = 2,681.90

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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.