Home / 3,669.90-5,500.21-2,129.10

Finding the Fourth Proportional to 3,669.90, 5,500.21 and 2,129.10

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Solution

The fourth proportional to 3,669.90, 5,500.21 and 2,129.10 is: 3,190.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,669.90 : 5,500.21 = 2,129.10 : x
  2. Step 2: Convert to fraction form
    3,669.90/5,500.21 = 2,129.10/x
  3. Step 3: Cross multiply
    3,669.90x = 5,500.21 × 2,129.10
  4. Step 4: Simplify right side
    3,669.90x = 11,710,497.11
  5. Step 5: Solve for x
    x = 11,710,497.11/3,669.90
  6. Step 6: Final answer
    x = 3,190.96

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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.