Home / 1,127.89-1,556.48-630.54

Finding the Fourth Proportional to 1,127.89, 1,556.48 and 630.54

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Solution

The fourth proportional to 1,127.89, 1,556.48 and 630.54 is: 870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.89 : 1,556.48 = 630.54 : x
  2. Step 2: Convert to fraction form
    1,127.89/1,556.48 = 630.54/x
  3. Step 3: Cross multiply
    1,127.89x = 1,556.48 × 630.54
  4. Step 4: Simplify right side
    1,127.89x = 981,422.90
  5. Step 5: Solve for x
    x = 981,422.90/1,127.89
  6. Step 6: Final answer
    x = 870.14

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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.