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Finding the Fourth Proportional to 1,745.72, 2,617.14 and 719

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Solution

The fourth proportional to 1,745.72, 2,617.14 and 719 is: 1,077.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.72 : 2,617.14 = 719 : x
  2. Step 2: Convert to fraction form
    1,745.72/2,617.14 = 719/x
  3. Step 3: Cross multiply
    1,745.72x = 2,617.14 × 719
  4. Step 4: Simplify right side
    1,745.72x = 1,881,723.66
  5. Step 5: Solve for x
    x = 1,881,723.66/1,745.72
  6. Step 6: Final answer
    x = 1,077.91

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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.