Home / 3,871.61-5,340.08-2,380.37

Finding the Fourth Proportional to 3,871.61, 5,340.08 and 2,380.37

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Solution

The fourth proportional to 3,871.61, 5,340.08 and 2,380.37 is: 3,283.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.61 : 5,340.08 = 2,380.37 : x
  2. Step 2: Convert to fraction form
    3,871.61/5,340.08 = 2,380.37/x
  3. Step 3: Cross multiply
    3,871.61x = 5,340.08 × 2,380.37
  4. Step 4: Simplify right side
    3,871.61x = 12,711,345.48
  5. Step 5: Solve for x
    x = 12,711,345.48/3,871.61
  6. Step 6: Final answer
    x = 3,283.22

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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.