Home / 2,116.88-3,172.04-1,293.92

Finding the Fourth Proportional to 2,116.88, 3,172.04 and 1,293.92

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Solution

The fourth proportional to 2,116.88, 3,172.04 and 1,293.92 is: 1,938.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.88 : 3,172.04 = 1,293.92 : x
  2. Step 2: Convert to fraction form
    2,116.88/3,172.04 = 1,293.92/x
  3. Step 3: Cross multiply
    2,116.88x = 3,172.04 × 1,293.92
  4. Step 4: Simplify right side
    2,116.88x = 4,104,366.00
  5. Step 5: Solve for x
    x = 4,104,366.00/2,116.88
  6. Step 6: Final answer
    x = 1,938.88

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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.