Home / 1,620.24-2,232.72-1,177.20

Finding the Fourth Proportional to 1,620.24, 2,232.72 and 1,177.20

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Solution

The fourth proportional to 1,620.24, 2,232.72 and 1,177.20 is: 1,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.24 : 2,232.72 = 1,177.20 : x
  2. Step 2: Convert to fraction form
    1,620.24/2,232.72 = 1,177.20/x
  3. Step 3: Cross multiply
    1,620.24x = 2,232.72 × 1,177.20
  4. Step 4: Simplify right side
    1,620.24x = 2,628,357.98
  5. Step 5: Solve for x
    x = 2,628,357.98/1,620.24
  6. Step 6: Final answer
    x = 1,622.20

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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.