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Finding the Fourth Proportional to 6,318.74, 9,478.13 and 1,936.19

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Solution

The fourth proportional to 6,318.74, 9,478.13 and 1,936.19 is: 2,904.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,318.74 : 9,478.13 = 1,936.19 : x
  2. Step 2: Convert to fraction form
    6,318.74/9,478.13 = 1,936.19/x
  3. Step 3: Cross multiply
    6,318.74x = 9,478.13 × 1,936.19
  4. Step 4: Simplify right side
    6,318.74x = 18,351,403.45
  5. Step 5: Solve for x
    x = 18,351,403.45/6,318.74
  6. Step 6: Final answer
    x = 2,904.28

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.