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Finding the Fourth Proportional to 8,506.28, 11,739.12 and 4,969.28

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Solution

The fourth proportional to 8,506.28, 11,739.12 and 4,969.28 is: 6,857.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,506.28 : 11,739.12 = 4,969.28 : x
  2. Step 2: Convert to fraction form
    8,506.28/11,739.12 = 4,969.28/x
  3. Step 3: Cross multiply
    8,506.28x = 11,739.12 × 4,969.28
  4. Step 4: Simplify right side
    8,506.28x = 58,334,974.23
  5. Step 5: Solve for x
    x = 58,334,974.23/8,506.28
  6. Step 6: Final answer
    x = 6,857.87

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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.