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Finding the Fourth Proportional to 6,768.56, 9,340.56 and 3,784.40

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Solution

The fourth proportional to 6,768.56, 9,340.56 and 3,784.40 is: 5,222.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,768.56 : 9,340.56 = 3,784.40 : x
  2. Step 2: Convert to fraction form
    6,768.56/9,340.56 = 3,784.40/x
  3. Step 3: Cross multiply
    6,768.56x = 9,340.56 × 3,784.40
  4. Step 4: Simplify right side
    6,768.56x = 35,348,415.26
  5. Step 5: Solve for x
    x = 35,348,415.26/6,768.56
  6. Step 6: Final answer
    x = 5,222.44

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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.