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Finding the Fourth Proportional to 2,671.56, 4,004.64 and 1,208.88

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Solution

The fourth proportional to 2,671.56, 4,004.64 and 1,208.88 is: 1,812.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,671.56 : 4,004.64 = 1,208.88 : x
  2. Step 2: Convert to fraction form
    2,671.56/4,004.64 = 1,208.88/x
  3. Step 3: Cross multiply
    2,671.56x = 4,004.64 × 1,208.88
  4. Step 4: Simplify right side
    2,671.56x = 4,841,129.20
  5. Step 5: Solve for x
    x = 4,841,129.20/2,671.56
  6. Step 6: Final answer
    x = 1,812.10

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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.