Home / 2,172.20-3,254.19-1,682.87

Finding the Fourth Proportional to 2,172.20, 3,254.19 and 1,682.87

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Solution

The fourth proportional to 2,172.20, 3,254.19 and 1,682.87 is: 2,521.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.20 : 3,254.19 = 1,682.87 : x
  2. Step 2: Convert to fraction form
    2,172.20/3,254.19 = 1,682.87/x
  3. Step 3: Cross multiply
    2,172.20x = 3,254.19 × 1,682.87
  4. Step 4: Simplify right side
    2,172.20x = 5,476,362.45
  5. Step 5: Solve for x
    x = 5,476,362.45/2,172.20
  6. Step 6: Final answer
    x = 2,521.12

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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.