Home / 7,988.74-11,983.83-2,145.31

Finding the Fourth Proportional to 7,988.74, 11,983.83 and 2,145.31

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Solution

The fourth proportional to 7,988.74, 11,983.83 and 2,145.31 is: 3,218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.74 : 11,983.83 = 2,145.31 : x
  2. Step 2: Convert to fraction form
    7,988.74/11,983.83 = 2,145.31/x
  3. Step 3: Cross multiply
    7,988.74x = 11,983.83 × 2,145.31
  4. Step 4: Simplify right side
    7,988.74x = 25,709,030.34
  5. Step 5: Solve for x
    x = 25,709,030.34/7,988.74
  6. Step 6: Final answer
    x = 3,218.16

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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.