Home / 1,261.06-1,887.53-674.59

Finding the Fourth Proportional to 1,261.06, 1,887.53 and 674.59

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Solution

The fourth proportional to 1,261.06, 1,887.53 and 674.59 is: 1,009.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261.06 : 1,887.53 = 674.59 : x
  2. Step 2: Convert to fraction form
    1,261.06/1,887.53 = 674.59/x
  3. Step 3: Cross multiply
    1,261.06x = 1,887.53 × 674.59
  4. Step 4: Simplify right side
    1,261.06x = 1,273,308.86
  5. Step 5: Solve for x
    x = 1,273,308.86/1,261.06
  6. Step 6: Final answer
    x = 1,009.71

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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.