Home / 4,163.85-6,245.78-1,390.01

Finding the Fourth Proportional to 4,163.85, 6,245.78 and 1,390.01

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Solution

The fourth proportional to 4,163.85, 6,245.78 and 1,390.01 is: 2,085.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,163.85 : 6,245.78 = 1,390.01 : x
  2. Step 2: Convert to fraction form
    4,163.85/6,245.78 = 1,390.01/x
  3. Step 3: Cross multiply
    4,163.85x = 6,245.78 × 1,390.01
  4. Step 4: Simplify right side
    4,163.85x = 8,681,658.48
  5. Step 5: Solve for x
    x = 8,681,658.48/4,163.85
  6. Step 6: Final answer
    x = 2,085.01

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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.