Home / 2,754.17-4,128.74-1,109.60

Finding the Fourth Proportional to 2,754.17, 4,128.74 and 1,109.60

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Solution

The fourth proportional to 2,754.17, 4,128.74 and 1,109.60 is: 1,663.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,754.17 : 4,128.74 = 1,109.60 : x
  2. Step 2: Convert to fraction form
    2,754.17/4,128.74 = 1,109.60/x
  3. Step 3: Cross multiply
    2,754.17x = 4,128.74 × 1,109.60
  4. Step 4: Simplify right side
    2,754.17x = 4,581,243.36
  5. Step 5: Solve for x
    x = 4,581,243.36/2,754.17
  6. Step 6: Final answer
    x = 1,663.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.