Home / 2,321.35-3,198.75-2,157.32

Finding the Fourth Proportional to 2,321.35, 3,198.75 and 2,157.32

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Solution

The fourth proportional to 2,321.35, 3,198.75 and 2,157.32 is: 2,972.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.35 : 3,198.75 = 2,157.32 : x
  2. Step 2: Convert to fraction form
    2,321.35/3,198.75 = 2,157.32/x
  3. Step 3: Cross multiply
    2,321.35x = 3,198.75 × 2,157.32
  4. Step 4: Simplify right side
    2,321.35x = 6,900,727.35
  5. Step 5: Solve for x
    x = 6,900,727.35/2,321.35
  6. Step 6: Final answer
    x = 2,972.72

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1.5x scale

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.