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Finding the Fourth Proportional to 4,643.73, 6,961.95 and 1,720.44

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Solution

The fourth proportional to 4,643.73, 6,961.95 and 1,720.44 is: 2,579.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,643.73 : 6,961.95 = 1,720.44 : x
  2. Step 2: Convert to fraction form
    4,643.73/6,961.95 = 1,720.44/x
  3. Step 3: Cross multiply
    4,643.73x = 6,961.95 × 1,720.44
  4. Step 4: Simplify right side
    4,643.73x = 11,977,617.26
  5. Step 5: Solve for x
    x = 11,977,617.26/4,643.73
  6. Step 6: Final answer
    x = 2,579.31

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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.