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Finding the Fourth Proportional to 8,508.54, 11,728.08 and 6,409.02

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Solution

The fourth proportional to 8,508.54, 11,728.08 and 6,409.02 is: 8,834.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,508.54 : 11,728.08 = 6,409.02 : x
  2. Step 2: Convert to fraction form
    8,508.54/11,728.08 = 6,409.02/x
  3. Step 3: Cross multiply
    8,508.54x = 11,728.08 × 6,409.02
  4. Step 4: Simplify right side
    8,508.54x = 75,165,499.28
  5. Step 5: Solve for x
    x = 75,165,499.28/8,508.54
  6. Step 6: Final answer
    x = 8,834.12

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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.