Home / 3,655.10-5,469.89-2,989.28

Finding the Fourth Proportional to 3,655.10, 5,469.89 and 2,989.28

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Solution

The fourth proportional to 3,655.10, 5,469.89 and 2,989.28 is: 4,473.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.10 : 5,469.89 = 2,989.28 : x
  2. Step 2: Convert to fraction form
    3,655.10/5,469.89 = 2,989.28/x
  3. Step 3: Cross multiply
    3,655.10x = 5,469.89 × 2,989.28
  4. Step 4: Simplify right side
    3,655.10x = 16,350,990.48
  5. Step 5: Solve for x
    x = 16,350,990.48/3,655.10
  6. Step 6: Final answer
    x = 4,473.48

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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.