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Finding the Fourth Proportional to 6,912.48, 9,539.28 and 3,768.48

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Solution

The fourth proportional to 6,912.48, 9,539.28 and 3,768.48 is: 5,200.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.48 : 9,539.28 = 3,768.48 : x
  2. Step 2: Convert to fraction form
    6,912.48/9,539.28 = 3,768.48/x
  3. Step 3: Cross multiply
    6,912.48x = 9,539.28 × 3,768.48
  4. Step 4: Simplify right side
    6,912.48x = 35,948,585.89
  5. Step 5: Solve for x
    x = 35,948,585.89/6,912.48
  6. Step 6: Final answer
    x = 5,200.53

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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.