Home / 6,912.60-9,539.52-3,768.78

Finding the Fourth Proportional to 6,912.60, 9,539.52 and 3,768.78

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Solution

The fourth proportional to 6,912.60, 9,539.52 and 3,768.78 is: 5,200.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.60 : 9,539.52 = 3,768.78 : x
  2. Step 2: Convert to fraction form
    6,912.60/9,539.52 = 3,768.78/x
  3. Step 3: Cross multiply
    6,912.60x = 9,539.52 × 3,768.78
  4. Step 4: Simplify right side
    6,912.60x = 35,952,352.19
  5. Step 5: Solve for x
    x = 35,952,352.19/6,912.60
  6. Step 6: Final answer
    x = 5,200.99

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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.