Home / 5,420.13-8,139.03-3,353.31

Finding the Fourth Proportional to 5,420.13, 8,139.03 and 3,353.31

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Solution

The fourth proportional to 5,420.13, 8,139.03 and 3,353.31 is: 5,035.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.13 : 8,139.03 = 3,353.31 : x
  2. Step 2: Convert to fraction form
    5,420.13/8,139.03 = 3,353.31/x
  3. Step 3: Cross multiply
    5,420.13x = 8,139.03 × 3,353.31
  4. Step 4: Simplify right side
    5,420.13x = 27,292,690.69
  5. Step 5: Solve for x
    x = 27,292,690.69/5,420.13
  6. Step 6: Final answer
    x = 5,035.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.