Home / 3,960.08-5,464.86-2,191.80

Finding the Fourth Proportional to 3,960.08, 5,464.86 and 2,191.80

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Solution

The fourth proportional to 3,960.08, 5,464.86 and 2,191.80 is: 3,024.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,960.08 : 5,464.86 = 2,191.80 : x
  2. Step 2: Convert to fraction form
    3,960.08/5,464.86 = 2,191.80/x
  3. Step 3: Cross multiply
    3,960.08x = 5,464.86 × 2,191.80
  4. Step 4: Simplify right side
    3,960.08x = 11,977,880.15
  5. Step 5: Solve for x
    x = 11,977,880.15/3,960.08
  6. Step 6: Final answer
    x = 3,024.66

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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.