Home / 7,418.68-11,127.21-1,872.04

Finding the Fourth Proportional to 7,418.68, 11,127.21 and 1,872.04

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Solution

The fourth proportional to 7,418.68, 11,127.21 and 1,872.04 is: 2,807.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,418.68 : 11,127.21 = 1,872.04 : x
  2. Step 2: Convert to fraction form
    7,418.68/11,127.21 = 1,872.04/x
  3. Step 3: Cross multiply
    7,418.68x = 11,127.21 × 1,872.04
  4. Step 4: Simplify right side
    7,418.68x = 20,830,582.21
  5. Step 5: Solve for x
    x = 20,830,582.21/7,418.68
  6. Step 6: Final answer
    x = 2,807.86

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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.