Home / 1,127.96-1,556.57-630.57

Finding the Fourth Proportional to 1,127.96, 1,556.57 and 630.57

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Solution

The fourth proportional to 1,127.96, 1,556.57 and 630.57 is: 870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.96 : 1,556.57 = 630.57 : x
  2. Step 2: Convert to fraction form
    1,127.96/1,556.57 = 630.57/x
  3. Step 3: Cross multiply
    1,127.96x = 1,556.57 × 630.57
  4. Step 4: Simplify right side
    1,127.96x = 981,527.92
  5. Step 5: Solve for x
    x = 981,527.92/1,127.96
  6. Step 6: Final answer
    x = 870.18

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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.