Home / 3,619.31-4,990.01-2,871.98

Finding the Fourth Proportional to 3,619.31, 4,990.01 and 2,871.98

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Solution

The fourth proportional to 3,619.31, 4,990.01 and 2,871.98 is: 3,959.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.31 : 4,990.01 = 2,871.98 : x
  2. Step 2: Convert to fraction form
    3,619.31/4,990.01 = 2,871.98/x
  3. Step 3: Cross multiply
    3,619.31x = 4,990.01 × 2,871.98
  4. Step 4: Simplify right side
    3,619.31x = 14,331,169.61
  5. Step 5: Solve for x
    x = 14,331,169.61/3,619.31
  6. Step 6: Final answer
    x = 3,959.65

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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.