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Finding the Fourth Proportional to 1,720.59, 2,580.88 and 1,171.41

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Solution

The fourth proportional to 1,720.59, 2,580.88 and 1,171.41 is: 1,757.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.59 : 2,580.88 = 1,171.41 : x
  2. Step 2: Convert to fraction form
    1,720.59/2,580.88 = 1,171.41/x
  3. Step 3: Cross multiply
    1,720.59x = 2,580.88 × 1,171.41
  4. Step 4: Simplify right side
    1,720.59x = 3,023,268.64
  5. Step 5: Solve for x
    x = 3,023,268.64/1,720.59
  6. Step 6: Final answer
    x = 1,757.11

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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.