Home / 3,637.20-5,447.70-2,989.20

Finding the Fourth Proportional to 3,637.20, 5,447.70 and 2,989.20

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Solution

The fourth proportional to 3,637.20, 5,447.70 and 2,989.20 is: 4,477.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,637.20 : 5,447.70 = 2,989.20 : x
  2. Step 2: Convert to fraction form
    3,637.20/5,447.70 = 2,989.20/x
  3. Step 3: Cross multiply
    3,637.20x = 5,447.70 × 2,989.20
  4. Step 4: Simplify right side
    3,637.20x = 16,284,264.84
  5. Step 5: Solve for x
    x = 16,284,264.84/3,637.20
  6. Step 6: Final answer
    x = 4,477.14

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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.