Home / 7,983.48-11,975.88-2,139.96

Finding the Fourth Proportional to 7,983.48, 11,975.88 and 2,139.96

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Solution

The fourth proportional to 7,983.48, 11,975.88 and 2,139.96 is: 3,210.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.48 : 11,975.88 = 2,139.96 : x
  2. Step 2: Convert to fraction form
    7,983.48/11,975.88 = 2,139.96/x
  3. Step 3: Cross multiply
    7,983.48x = 11,975.88 × 2,139.96
  4. Step 4: Simplify right side
    7,983.48x = 25,627,904.16
  5. Step 5: Solve for x
    x = 25,627,904.16/7,983.48
  6. Step 6: Final answer
    x = 3,210.12

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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.