Home / 1,091.07-1,504.54-1,005.61

Finding the Fourth Proportional to 1,091.07, 1,504.54 and 1,005.61

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Solution

The fourth proportional to 1,091.07, 1,504.54 and 1,005.61 is: 1,386.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091.07 : 1,504.54 = 1,005.61 : x
  2. Step 2: Convert to fraction form
    1,091.07/1,504.54 = 1,005.61/x
  3. Step 3: Cross multiply
    1,091.07x = 1,504.54 × 1,005.61
  4. Step 4: Simplify right side
    1,091.07x = 1,512,975.44
  5. Step 5: Solve for x
    x = 1,512,975.44/1,091.07
  6. Step 6: Final answer
    x = 1,386.69

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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.