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Finding the Fourth Proportional to 2,940.71, 4,057.29 and 1,761.35

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Solution

The fourth proportional to 2,940.71, 4,057.29 and 1,761.35 is: 2,430.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.71 : 4,057.29 = 1,761.35 : x
  2. Step 2: Convert to fraction form
    2,940.71/4,057.29 = 1,761.35/x
  3. Step 3: Cross multiply
    2,940.71x = 4,057.29 × 1,761.35
  4. Step 4: Simplify right side
    2,940.71x = 7,146,287.46
  5. Step 5: Solve for x
    x = 7,146,287.46/2,940.71
  6. Step 6: Final answer
    x = 2,430.13

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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.