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Finding the Fourth Proportional to 2,179.96, 3,274.14 and 1,868.31

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Solution

The fourth proportional to 2,179.96, 3,274.14 and 1,868.31 is: 2,806.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.96 : 3,274.14 = 1,868.31 : x
  2. Step 2: Convert to fraction form
    2,179.96/3,274.14 = 1,868.31/x
  3. Step 3: Cross multiply
    2,179.96x = 3,274.14 × 1,868.31
  4. Step 4: Simplify right side
    2,179.96x = 6,117,108.50
  5. Step 5: Solve for x
    x = 6,117,108.50/2,179.96
  6. Step 6: Final answer
    x = 2,806.06

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1.5x scale

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.