Home / 1,288.52-1,938.26-1,168.24

Finding the Fourth Proportional to 1,288.52, 1,938.26 and 1,168.24

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Solution

The fourth proportional to 1,288.52, 1,938.26 and 1,168.24 is: 1,757.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.52 : 1,938.26 = 1,168.24 : x
  2. Step 2: Convert to fraction form
    1,288.52/1,938.26 = 1,168.24/x
  3. Step 3: Cross multiply
    1,288.52x = 1,938.26 × 1,168.24
  4. Step 4: Simplify right side
    1,288.52x = 2,264,352.86
  5. Step 5: Solve for x
    x = 2,264,352.86/1,288.52
  6. Step 6: Final answer
    x = 1,757.33

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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.