Home / 1,127.95-1,556.61-630.55

Finding the Fourth Proportional to 1,127.95, 1,556.61 and 630.55

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Solution

The fourth proportional to 1,127.95, 1,556.61 and 630.55 is: 870.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,127.95 : 1,556.61 = 630.55 : x
  2. Step 2: Convert to fraction form
    1,127.95/1,556.61 = 630.55/x
  3. Step 3: Cross multiply
    1,127.95x = 1,556.61 × 630.55
  4. Step 4: Simplify right side
    1,127.95x = 981,520.44
  5. Step 5: Solve for x
    x = 981,520.44/1,127.95
  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.