Home / 3,871.90-5,353.59-3,379.84

Finding the Fourth Proportional to 3,871.90, 5,353.59 and 3,379.84

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Solution

The fourth proportional to 3,871.90, 5,353.59 and 3,379.84 is: 4,673.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,871.90 : 5,353.59 = 3,379.84 : x
  2. Step 2: Convert to fraction form
    3,871.90/5,353.59 = 3,379.84/x
  3. Step 3: Cross multiply
    3,871.90x = 5,353.59 × 3,379.84
  4. Step 4: Simplify right side
    3,871.90x = 18,094,277.63
  5. Step 5: Solve for x
    x = 18,094,277.63/3,871.90
  6. Step 6: Final answer
    x = 4,673.23

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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.