Home / 7,982.02-11,973.84-2,139.22

Finding the Fourth Proportional to 7,982.02, 11,973.84 and 2,139.22

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Solution

The fourth proportional to 7,982.02, 11,973.84 and 2,139.22 is: 3,209.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,982.02 : 11,973.84 = 2,139.22 : x
  2. Step 2: Convert to fraction form
    7,982.02/11,973.84 = 2,139.22/x
  3. Step 3: Cross multiply
    7,982.02x = 11,973.84 × 2,139.22
  4. Step 4: Simplify right side
    7,982.02x = 25,614,678.00
  5. Step 5: Solve for x
    x = 25,614,678.00/7,982.02
  6. Step 6: Final answer
    x = 3,209.05

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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.