Home / 1,127.48-1,550.75-905.94

Finding the Fourth Proportional to 1,127.48, 1,550.75 and 905.94

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Solution

The fourth proportional to 1,127.48, 1,550.75 and 905.94 is: 1,246.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.48 : 1,550.75 = 905.94 : x
  2. Step 2: Convert to fraction form
    1,127.48/1,550.75 = 905.94/x
  3. Step 3: Cross multiply
    1,127.48x = 1,550.75 × 905.94
  4. Step 4: Simplify right side
    1,127.48x = 1,404,881.93
  5. Step 5: Solve for x
    x = 1,404,881.93/1,127.48
  6. Step 6: Final answer
    x = 1,246.04

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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.