Home / 1,568.04-2,163.31-905.05

Finding the Fourth Proportional to 1,568.04, 2,163.31 and 905.05

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Solution

The fourth proportional to 1,568.04, 2,163.31 and 905.05 is: 1,248.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.04 : 2,163.31 = 905.05 : x
  2. Step 2: Convert to fraction form
    1,568.04/2,163.31 = 905.05/x
  3. Step 3: Cross multiply
    1,568.04x = 2,163.31 × 905.05
  4. Step 4: Simplify right side
    1,568.04x = 1,957,903.72
  5. Step 5: Solve for x
    x = 1,957,903.72/1,568.04
  6. Step 6: Final answer
    x = 1,248.63

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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.