Home / 1,263.03-1,743.96-1,138.20

Finding the Fourth Proportional to 1,263.03, 1,743.96 and 1,138.20

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Solution

The fourth proportional to 1,263.03, 1,743.96 and 1,138.20 is: 1,571.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263.03 : 1,743.96 = 1,138.20 : x
  2. Step 2: Convert to fraction form
    1,263.03/1,743.96 = 1,138.20/x
  3. Step 3: Cross multiply
    1,263.03x = 1,743.96 × 1,138.20
  4. Step 4: Simplify right side
    1,263.03x = 1,984,975.27
  5. Step 5: Solve for x
    x = 1,984,975.27/1,263.03
  6. Step 6: Final answer
    x = 1,571.60

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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.