Home / 7,983.16-11,973.83-2,139.31

Finding the Fourth Proportional to 7,983.16, 11,973.83 and 2,139.31

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Solution

The fourth proportional to 7,983.16, 11,973.83 and 2,139.31 is: 3,208.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.16 : 11,973.83 = 2,139.31 : x
  2. Step 2: Convert to fraction form
    7,983.16/11,973.83 = 2,139.31/x
  3. Step 3: Cross multiply
    7,983.16x = 11,973.83 × 2,139.31
  4. Step 4: Simplify right side
    7,983.16x = 25,615,738.53
  5. Step 5: Solve for x
    x = 25,615,738.53/7,983.16
  6. Step 6: Final answer
    x = 3,208.72

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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.