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Finding the Fourth Proportional to 3,104.31, 4,656.50 and 913.08

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Solution

The fourth proportional to 3,104.31, 4,656.50 and 913.08 is: 1,369.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,104.31 : 4,656.50 = 913.08 : x
  2. Step 2: Convert to fraction form
    3,104.31/4,656.50 = 913.08/x
  3. Step 3: Cross multiply
    3,104.31x = 4,656.50 × 913.08
  4. Step 4: Simplify right side
    3,104.31x = 4,251,757.02
  5. Step 5: Solve for x
    x = 4,251,757.02/3,104.31
  6. Step 6: Final answer
    x = 1,369.63

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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.