Home / 1,568.23-2,163.74-905.04

Finding the Fourth Proportional to 1,568.23, 2,163.74 and 905.04

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Solution

The fourth proportional to 1,568.23, 2,163.74 and 905.04 is: 1,248.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,568.23 : 2,163.74 = 905.04 : x
  2. Step 2: Convert to fraction form
    1,568.23/2,163.74 = 905.04/x
  3. Step 3: Cross multiply
    1,568.23x = 2,163.74 × 905.04
  4. Step 4: Simplify right side
    1,568.23x = 1,958,266.72
  5. Step 5: Solve for x
    x = 1,958,266.72/1,568.23
  6. Step 6: Final answer
    x = 1,248.71

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1.5x scale

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.