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Finding the Fourth Proportional to 6,318.26, 8,718.26 and 3,665.18

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Solution

The fourth proportional to 6,318.26, 8,718.26 and 3,665.18 is: 5,057.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.26 : 8,718.26 = 3,665.18 : x
  2. Step 2: Convert to fraction form
    6,318.26/8,718.26 = 3,665.18/x
  3. Step 3: Cross multiply
    6,318.26x = 8,718.26 × 3,665.18
  4. Step 4: Simplify right side
    6,318.26x = 31,953,992.19
  5. Step 5: Solve for x
    x = 31,953,992.19/6,318.26
  6. Step 6: Final answer
    x = 5,057.40

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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.