Home / 1,620.86-2,233.66-1,122.56

Finding the Fourth Proportional to 1,620.86, 2,233.66 and 1,122.56

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Solution

The fourth proportional to 1,620.86, 2,233.66 and 1,122.56 is: 1,546.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,620.86 : 2,233.66 = 1,122.56 : x
  2. Step 2: Convert to fraction form
    1,620.86/2,233.66 = 1,122.56/x
  3. Step 3: Cross multiply
    1,620.86x = 2,233.66 × 1,122.56
  4. Step 4: Simplify right side
    1,620.86x = 2,507,417.37
  5. Step 5: Solve for x
    x = 2,507,417.37/1,620.86
  6. Step 6: Final answer
    x = 1,546.97

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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.