Home / 9,721.88-14,581.20-3,147.12

Finding the Fourth Proportional to 9,721.88, 14,581.20 and 3,147.12

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Solution

The fourth proportional to 9,721.88, 14,581.20 and 3,147.12 is: 4,720.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.88 : 14,581.20 = 3,147.12 : x
  2. Step 2: Convert to fraction form
    9,721.88/14,581.20 = 3,147.12/x
  3. Step 3: Cross multiply
    9,721.88x = 14,581.20 × 3,147.12
  4. Step 4: Simplify right side
    9,721.88x = 45,888,786.14
  5. Step 5: Solve for x
    x = 45,888,786.14/9,721.88
  6. Step 6: Final answer
    x = 4,720.16

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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.