Home / 3,914.33-5,402.30-2,421.90

Finding the Fourth Proportional to 3,914.33, 5,402.30 and 2,421.90

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Solution

The fourth proportional to 3,914.33, 5,402.30 and 2,421.90 is: 3,342.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,914.33 : 5,402.30 = 2,421.90 : x
  2. Step 2: Convert to fraction form
    3,914.33/5,402.30 = 2,421.90/x
  3. Step 3: Cross multiply
    3,914.33x = 5,402.30 × 2,421.90
  4. Step 4: Simplify right side
    3,914.33x = 13,083,818.26
  5. Step 5: Solve for x
    x = 13,083,818.26/3,914.33
  6. Step 6: Final answer
    x = 3,342.55

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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.