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Finding the Fourth Proportional to 2,507.63, 3,761.75 and 864.55

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Solution

The fourth proportional to 2,507.63, 3,761.75 and 864.55 is: 1,296.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,507.63 : 3,761.75 = 864.55 : x
  2. Step 2: Convert to fraction form
    2,507.63/3,761.75 = 864.55/x
  3. Step 3: Cross multiply
    2,507.63x = 3,761.75 × 864.55
  4. Step 4: Simplify right side
    2,507.63x = 3,252,213.72
  5. Step 5: Solve for x
    x = 3,252,213.72/2,507.63
  6. Step 6: Final answer
    x = 1,296.93

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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.