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Finding the Fourth Proportional to 3,395.96, 5,090.90 and 2,159.90

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Solution

The fourth proportional to 3,395.96, 5,090.90 and 2,159.90 is: 3,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.96 : 5,090.90 = 2,159.90 : x
  2. Step 2: Convert to fraction form
    3,395.96/5,090.90 = 2,159.90/x
  3. Step 3: Cross multiply
    3,395.96x = 5,090.90 × 2,159.90
  4. Step 4: Simplify right side
    3,395.96x = 10,995,798.66
  5. Step 5: Solve for x
    x = 10,995,798.66/3,395.96
  6. Step 6: Final answer
    x = 3,237.91

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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.