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Finding the Fourth Proportional to 2,215.68, 3,322.96 and 755.52

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Solution

The fourth proportional to 2,215.68, 3,322.96 and 755.52 is: 1,133.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,215.68 : 3,322.96 = 755.52 : x
  2. Step 2: Convert to fraction form
    2,215.68/3,322.96 = 755.52/x
  3. Step 3: Cross multiply
    2,215.68x = 3,322.96 × 755.52
  4. Step 4: Simplify right side
    2,215.68x = 2,510,562.74
  5. Step 5: Solve for x
    x = 2,510,562.74/2,215.68
  6. Step 6: Final answer
    x = 1,133.09

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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.