Home / 6,912.90-9,541.62-3,930.48

Finding the Fourth Proportional to 6,912.90, 9,541.62 and 3,930.48

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Solution

The fourth proportional to 6,912.90, 9,541.62 and 3,930.48 is: 5,425.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.90 : 9,541.62 = 3,930.48 : x
  2. Step 2: Convert to fraction form
    6,912.90/9,541.62 = 3,930.48/x
  3. Step 3: Cross multiply
    6,912.90x = 9,541.62 × 3,930.48
  4. Step 4: Simplify right side
    6,912.90x = 37,503,146.58
  5. Step 5: Solve for x
    x = 37,503,146.58/6,912.90
  6. Step 6: Final answer
    x = 5,425.10

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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.