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Finding the Fourth Proportional to 2,768.96, 4,154.08 and 1,230.40

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Solution

The fourth proportional to 2,768.96, 4,154.08 and 1,230.40 is: 1,845.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,768.96 : 4,154.08 = 1,230.40 : x
  2. Step 2: Convert to fraction form
    2,768.96/4,154.08 = 1,230.40/x
  3. Step 3: Cross multiply
    2,768.96x = 4,154.08 × 1,230.40
  4. Step 4: Simplify right side
    2,768.96x = 5,111,180.03
  5. Step 5: Solve for x
    x = 5,111,180.03/2,768.96
  6. Step 6: Final answer
    x = 1,845.88

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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.