Home / 5,408.87-8,107.77-2,117.48

Finding the Fourth Proportional to 5,408.87, 8,107.77 and 2,117.48

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Solution

The fourth proportional to 5,408.87, 8,107.77 and 2,117.48 is: 3,174.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.87 : 8,107.77 = 2,117.48 : x
  2. Step 2: Convert to fraction form
    5,408.87/8,107.77 = 2,117.48/x
  3. Step 3: Cross multiply
    5,408.87x = 8,107.77 × 2,117.48
  4. Step 4: Simplify right side
    5,408.87x = 17,168,040.82
  5. Step 5: Solve for x
    x = 17,168,040.82/5,408.87
  6. Step 6: Final answer
    x = 3,174.05

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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.