Home / 5,871.80-8,105.29-3,885.07

Finding the Fourth Proportional to 5,871.80, 8,105.29 and 3,885.07

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Solution

The fourth proportional to 5,871.80, 8,105.29 and 3,885.07 is: 5,362.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.80 : 8,105.29 = 3,885.07 : x
  2. Step 2: Convert to fraction form
    5,871.80/8,105.29 = 3,885.07/x
  3. Step 3: Cross multiply
    5,871.80x = 8,105.29 × 3,885.07
  4. Step 4: Simplify right side
    5,871.80x = 31,489,619.02
  5. Step 5: Solve for x
    x = 31,489,619.02/5,871.80
  6. Step 6: Final answer
    x = 5,362.86

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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.