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Finding the Fourth Proportional to 2,603.48, 3,905.21 and 1,304.64

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Solution

The fourth proportional to 2,603.48, 3,905.21 and 1,304.64 is: 1,956.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,603.48 : 3,905.21 = 1,304.64 : x
  2. Step 2: Convert to fraction form
    2,603.48/3,905.21 = 1,304.64/x
  3. Step 3: Cross multiply
    2,603.48x = 3,905.21 × 1,304.64
  4. Step 4: Simplify right side
    2,603.48x = 5,094,896.44
  5. Step 5: Solve for x
    x = 5,094,896.44/2,603.48
  6. Step 6: Final answer
    x = 1,956.96

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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.