Home / 1,263.24-1,743.66-1,222.20

Finding the Fourth Proportional to 1,263.24, 1,743.66 and 1,222.20

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Solution

The fourth proportional to 1,263.24, 1,743.66 and 1,222.20 is: 1,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.24 : 1,743.66 = 1,222.20 : x
  2. Step 2: Convert to fraction form
    1,263.24/1,743.66 = 1,222.20/x
  3. Step 3: Cross multiply
    1,263.24x = 1,743.66 × 1,222.20
  4. Step 4: Simplify right side
    1,263.24x = 2,131,101.25
  5. Step 5: Solve for x
    x = 2,131,101.25/1,263.24
  6. Step 6: Final answer
    x = 1,687.01

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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.