Home / 1,657.36-2,287.09-911.27

Finding the Fourth Proportional to 1,657.36, 2,287.09 and 911.27

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Solution

The fourth proportional to 1,657.36, 2,287.09 and 911.27 is: 1,257.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.36 : 2,287.09 = 911.27 : x
  2. Step 2: Convert to fraction form
    1,657.36/2,287.09 = 911.27/x
  3. Step 3: Cross multiply
    1,657.36x = 2,287.09 × 911.27
  4. Step 4: Simplify right side
    1,657.36x = 2,084,163.36
  5. Step 5: Solve for x
    x = 2,084,163.36/1,657.36
  6. Step 6: Final answer
    x = 1,257.52

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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.