Home / 1,127.73-1,556.31-630.36

Finding the Fourth Proportional to 1,127.73, 1,556.31 and 630.36

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Solution

The fourth proportional to 1,127.73, 1,556.31 and 630.36 is: 869.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.73 : 1,556.31 = 630.36 : x
  2. Step 2: Convert to fraction form
    1,127.73/1,556.31 = 630.36/x
  3. Step 3: Cross multiply
    1,127.73x = 1,556.31 × 630.36
  4. Step 4: Simplify right side
    1,127.73x = 981,035.57
  5. Step 5: Solve for x
    x = 981,035.57/1,127.73
  6. Step 6: Final answer
    x = 869.92

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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.