Home / 2,261.76-3,121.02-1,267.02

Finding the Fourth Proportional to 2,261.76, 3,121.02 and 1,267.02

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Solution

The fourth proportional to 2,261.76, 3,121.02 and 1,267.02 is: 1,748.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.76 : 3,121.02 = 1,267.02 : x
  2. Step 2: Convert to fraction form
    2,261.76/3,121.02 = 1,267.02/x
  3. Step 3: Cross multiply
    2,261.76x = 3,121.02 × 1,267.02
  4. Step 4: Simplify right side
    2,261.76x = 3,954,394.76
  5. Step 5: Solve for x
    x = 3,954,394.76/2,261.76
  6. Step 6: Final answer
    x = 1,748.37

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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.