Home / 1,259.73-1,887.26-869.27

Finding the Fourth Proportional to 1,259.73, 1,887.26 and 869.27

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Solution

The fourth proportional to 1,259.73, 1,887.26 and 869.27 is: 1,302.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.73 : 1,887.26 = 869.27 : x
  2. Step 2: Convert to fraction form
    1,259.73/1,887.26 = 869.27/x
  3. Step 3: Cross multiply
    1,259.73x = 1,887.26 × 869.27
  4. Step 4: Simplify right side
    1,259.73x = 1,640,524.72
  5. Step 5: Solve for x
    x = 1,640,524.72/1,259.73
  6. Step 6: Final answer
    x = 1,302.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.