Home / 3,116.78-4,299.65-1,857.43

Finding the Fourth Proportional to 3,116.78, 4,299.65 and 1,857.43

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Solution

The fourth proportional to 3,116.78, 4,299.65 and 1,857.43 is: 2,562.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.78 : 4,299.65 = 1,857.43 : x
  2. Step 2: Convert to fraction form
    3,116.78/4,299.65 = 1,857.43/x
  3. Step 3: Cross multiply
    3,116.78x = 4,299.65 × 1,857.43
  4. Step 4: Simplify right side
    3,116.78x = 7,986,301.95
  5. Step 5: Solve for x
    x = 7,986,301.95/3,116.78
  6. Step 6: Final answer
    x = 2,562.36

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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.