Home / 1,270.96-1,893.32-1,191.28

Finding the Fourth Proportional to 1,270.96, 1,893.32 and 1,191.28

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Solution

The fourth proportional to 1,270.96, 1,893.32 and 1,191.28 is: 1,774.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.96 : 1,893.32 = 1,191.28 : x
  2. Step 2: Convert to fraction form
    1,270.96/1,893.32 = 1,191.28/x
  3. Step 3: Cross multiply
    1,270.96x = 1,893.32 × 1,191.28
  4. Step 4: Simplify right side
    1,270.96x = 2,255,474.25
  5. Step 5: Solve for x
    x = 2,255,474.25/1,270.96
  6. Step 6: Final answer
    x = 1,774.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.