Home / 4,120.24-6,180.90-2,172.58

Finding the Fourth Proportional to 4,120.24, 6,180.90 and 2,172.58

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Solution

The fourth proportional to 4,120.24, 6,180.90 and 2,172.58 is: 3,259.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.24 : 6,180.90 = 2,172.58 : x
  2. Step 2: Convert to fraction form
    4,120.24/6,180.90 = 2,172.58/x
  3. Step 3: Cross multiply
    4,120.24x = 6,180.90 × 2,172.58
  4. Step 4: Simplify right side
    4,120.24x = 13,428,499.72
  5. Step 5: Solve for x
    x = 13,428,499.72/4,120.24
  6. Step 6: Final answer
    x = 3,259.15

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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.