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Finding the Fourth Proportional to 6,318.66, 8,715.03 and 4,639.56

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Solution

The fourth proportional to 6,318.66, 8,715.03 and 4,639.56 is: 6,399.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.66 : 8,715.03 = 4,639.56 : x
  2. Step 2: Convert to fraction form
    6,318.66/8,715.03 = 4,639.56/x
  3. Step 3: Cross multiply
    6,318.66x = 8,715.03 × 4,639.56
  4. Step 4: Simplify right side
    6,318.66x = 40,433,904.59
  5. Step 5: Solve for x
    x = 40,433,904.59/6,318.66
  6. Step 6: Final answer
    x = 6,399.13

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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.