Home / 4,912.85-6,776.66-3,145.64

Finding the Fourth Proportional to 4,912.85, 6,776.66 and 3,145.64

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Solution

The fourth proportional to 4,912.85, 6,776.66 and 3,145.64 is: 4,339.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.85 : 6,776.66 = 3,145.64 : x
  2. Step 2: Convert to fraction form
    4,912.85/6,776.66 = 3,145.64/x
  3. Step 3: Cross multiply
    4,912.85x = 6,776.66 × 3,145.64
  4. Step 4: Simplify right side
    4,912.85x = 21,316,906.74
  5. Step 5: Solve for x
    x = 21,316,906.74/4,912.85
  6. Step 6: Final answer
    x = 4,339.01

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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.