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Finding the Fourth Proportional to 1,720.89, 2,579.31 and 795.60

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Solution

The fourth proportional to 1,720.89, 2,579.31 and 795.60 is: 1,192.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.89 : 2,579.31 = 795.60 : x
  2. Step 2: Convert to fraction form
    1,720.89/2,579.31 = 795.60/x
  3. Step 3: Cross multiply
    1,720.89x = 2,579.31 × 795.60
  4. Step 4: Simplify right side
    1,720.89x = 2,052,099.04
  5. Step 5: Solve for x
    x = 2,052,099.04/1,720.89
  6. Step 6: Final answer
    x = 1,192.46

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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.