Home / 1,745.13-2,617.21-690.77

Finding the Fourth Proportional to 1,745.13, 2,617.21 and 690.77

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Solution

The fourth proportional to 1,745.13, 2,617.21 and 690.77 is: 1,035.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,745.13 : 2,617.21 = 690.77 : x
  2. Step 2: Convert to fraction form
    1,745.13/2,617.21 = 690.77/x
  3. Step 3: Cross multiply
    1,745.13x = 2,617.21 × 690.77
  4. Step 4: Simplify right side
    1,745.13x = 1,807,890.15
  5. Step 5: Solve for x
    x = 1,807,890.15/1,745.13
  6. Step 6: Final answer
    x = 1,035.96

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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.