Home / 7,983.77-11,974.03-2,139.01

Finding the Fourth Proportional to 7,983.77, 11,974.03 and 2,139.01

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Solution

The fourth proportional to 7,983.77, 11,974.03 and 2,139.01 is: 3,208.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.77 : 11,974.03 = 2,139.01 : x
  2. Step 2: Convert to fraction form
    7,983.77/11,974.03 = 2,139.01/x
  3. Step 3: Cross multiply
    7,983.77x = 11,974.03 × 2,139.01
  4. Step 4: Simplify right side
    7,983.77x = 25,612,534.63
  5. Step 5: Solve for x
    x = 25,612,534.63/7,983.77
  6. Step 6: Final answer
    x = 3,208.08

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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.