Home / 5,417.15-8,120.18-4,115.75

Finding the Fourth Proportional to 5,417.15, 8,120.18 and 4,115.75

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Solution

The fourth proportional to 5,417.15, 8,120.18 and 4,115.75 is: 6,169.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.15 : 8,120.18 = 4,115.75 : x
  2. Step 2: Convert to fraction form
    5,417.15/8,120.18 = 4,115.75/x
  3. Step 3: Cross multiply
    5,417.15x = 8,120.18 × 4,115.75
  4. Step 4: Simplify right side
    5,417.15x = 33,420,600.52
  5. Step 5: Solve for x
    x = 33,420,600.52/5,417.15
  6. Step 6: Final answer
    x = 6,169.41

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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.