Home / 5,891.55-8,120.87-5,408.71

Finding the Fourth Proportional to 5,891.55, 8,120.87 and 5,408.71

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Solution

The fourth proportional to 5,891.55, 8,120.87 and 5,408.71 is: 7,455.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891.55 : 8,120.87 = 5,408.71 : x
  2. Step 2: Convert to fraction form
    5,891.55/8,120.87 = 5,408.71/x
  3. Step 3: Cross multiply
    5,891.55x = 8,120.87 × 5,408.71
  4. Step 4: Simplify right side
    5,891.55x = 43,923,434.14
  5. Step 5: Solve for x
    x = 43,923,434.14/5,891.55
  6. Step 6: Final answer
    x = 7,455.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.