Home / 7,882.42-11,817.71-3,720.06

Finding the Fourth Proportional to 7,882.42, 11,817.71 and 3,720.06

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Solution

The fourth proportional to 7,882.42, 11,817.71 and 3,720.06 is: 5,577.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,882.42 : 11,817.71 = 3,720.06 : x
  2. Step 2: Convert to fraction form
    7,882.42/11,817.71 = 3,720.06/x
  3. Step 3: Cross multiply
    7,882.42x = 11,817.71 × 3,720.06
  4. Step 4: Simplify right side
    7,882.42x = 43,962,541.91
  5. Step 5: Solve for x
    x = 43,962,541.91/7,882.42
  6. Step 6: Final answer
    x = 5,577.29

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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.