Home / 6,680.78-9,209.25-4,999.64

Finding the Fourth Proportional to 6,680.78, 9,209.25 and 4,999.64

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Solution

The fourth proportional to 6,680.78, 9,209.25 and 4,999.64 is: 6,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,680.78 : 9,209.25 = 4,999.64 : x
  2. Step 2: Convert to fraction form
    6,680.78/9,209.25 = 4,999.64/x
  3. Step 3: Cross multiply
    6,680.78x = 9,209.25 × 4,999.64
  4. Step 4: Simplify right side
    6,680.78x = 46,042,934.67
  5. Step 5: Solve for x
    x = 46,042,934.67/6,680.78
  6. Step 6: Final answer
    x = 6,891.85

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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.