Home / 1,276.07-1,914.09-727.08

Finding the Fourth Proportional to 1,276.07, 1,914.09 and 727.08

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Solution

The fourth proportional to 1,276.07, 1,914.09 and 727.08 is: 1,090.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.07 : 1,914.09 = 727.08 : x
  2. Step 2: Convert to fraction form
    1,276.07/1,914.09 = 727.08/x
  3. Step 3: Cross multiply
    1,276.07x = 1,914.09 × 727.08
  4. Step 4: Simplify right side
    1,276.07x = 1,391,701.01
  5. Step 5: Solve for x
    x = 1,391,701.01/1,276.07
  6. Step 6: Final answer
    x = 1,090.61

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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.