Home / 3,172.64-4,378.52-2,108.54

Finding the Fourth Proportional to 3,172.64, 4,378.52 and 2,108.54

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Solution

The fourth proportional to 3,172.64, 4,378.52 and 2,108.54 is: 2,909.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.64 : 4,378.52 = 2,108.54 : x
  2. Step 2: Convert to fraction form
    3,172.64/4,378.52 = 2,108.54/x
  3. Step 3: Cross multiply
    3,172.64x = 4,378.52 × 2,108.54
  4. Step 4: Simplify right side
    3,172.64x = 9,232,284.56
  5. Step 5: Solve for x
    x = 9,232,284.56/3,172.64
  6. Step 6: Final answer
    x = 2,909.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.