Home / 5,447.40-8,165.25-2,155.92

Finding the Fourth Proportional to 5,447.40, 8,165.25 and 2,155.92

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Solution

The fourth proportional to 5,447.40, 8,165.25 and 2,155.92 is: 3,231.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,447.40 : 8,165.25 = 2,155.92 : x
  2. Step 2: Convert to fraction form
    5,447.40/8,165.25 = 2,155.92/x
  3. Step 3: Cross multiply
    5,447.40x = 8,165.25 × 2,155.92
  4. Step 4: Simplify right side
    5,447.40x = 17,603,625.78
  5. Step 5: Solve for x
    x = 17,603,625.78/5,447.40
  6. Step 6: Final answer
    x = 3,231.56

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1.5x scale

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.