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Finding the Fourth Proportional to 1,567.38, 2,162.97 and 859.27

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Solution

The fourth proportional to 1,567.38, 2,162.97 and 859.27 is: 1,185.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,567.38 : 2,162.97 = 859.27 : x
  2. Step 2: Convert to fraction form
    1,567.38/2,162.97 = 859.27/x
  3. Step 3: Cross multiply
    1,567.38x = 2,162.97 × 859.27
  4. Step 4: Simplify right side
    1,567.38x = 1,858,568.99
  5. Step 5: Solve for x
    x = 1,858,568.99/1,567.38
  6. Step 6: Final answer
    x = 1,185.78

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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.