Home / 1,568.23-2,163.67-905.00

Finding the Fourth Proportional to 1,568.23, 2,163.67 and 905.00

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Solution

The fourth proportional to 1,568.23, 2,163.67 and 905.00 is: 1,248.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.23 : 2,163.67 = 905.00 : x
  2. Step 2: Convert to fraction form
    1,568.23/2,163.67 = 905.00/x
  3. Step 3: Cross multiply
    1,568.23x = 2,163.67 × 905.00
  4. Step 4: Simplify right side
    1,568.23x = 1,958,108.27
  5. Step 5: Solve for x
    x = 1,958,108.27/1,568.23
  6. Step 6: Final answer
    x = 1,248.61

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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.