Home / 1,273.29-1,755.56-1,007.21

Finding the Fourth Proportional to 1,273.29, 1,755.56 and 1,007.21

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Solution

The fourth proportional to 1,273.29, 1,755.56 and 1,007.21 is: 1,388.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273.29 : 1,755.56 = 1,007.21 : x
  2. Step 2: Convert to fraction form
    1,273.29/1,755.56 = 1,007.21/x
  3. Step 3: Cross multiply
    1,273.29x = 1,755.56 × 1,007.21
  4. Step 4: Simplify right side
    1,273.29x = 1,768,203.77
  5. Step 5: Solve for x
    x = 1,768,203.77/1,273.29
  6. Step 6: Final answer
    x = 1,388.69

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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.