Home / 2,621.56-3,932.58-1,322.20

Finding the Fourth Proportional to 2,621.56, 3,932.58 and 1,322.20

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Solution

The fourth proportional to 2,621.56, 3,932.58 and 1,322.20 is: 1,983.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.56 : 3,932.58 = 1,322.20 : x
  2. Step 2: Convert to fraction form
    2,621.56/3,932.58 = 1,322.20/x
  3. Step 3: Cross multiply
    2,621.56x = 3,932.58 × 1,322.20
  4. Step 4: Simplify right side
    2,621.56x = 5,199,657.28
  5. Step 5: Solve for x
    x = 5,199,657.28/2,621.56
  6. Step 6: Final answer
    x = 1,983.42

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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.