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Finding the Fourth Proportional to 2,751.76, 4,126.56 and 1,109.08

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Solution

The fourth proportional to 2,751.76, 4,126.56 and 1,109.08 is: 1,663.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,751.76 : 4,126.56 = 1,109.08 : x
  2. Step 2: Convert to fraction form
    2,751.76/4,126.56 = 1,109.08/x
  3. Step 3: Cross multiply
    2,751.76x = 4,126.56 × 1,109.08
  4. Step 4: Simplify right side
    2,751.76x = 4,576,685.16
  5. Step 5: Solve for x
    x = 4,576,685.16/2,751.76
  6. Step 6: Final answer
    x = 1,663.18

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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.