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Finding the Fourth Proportional to 6,785.99, 9,364.75 and 3,914.05

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Solution

The fourth proportional to 6,785.99, 9,364.75 and 3,914.05 is: 5,401.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,785.99 : 9,364.75 = 3,914.05 : x
  2. Step 2: Convert to fraction form
    6,785.99/9,364.75 = 3,914.05/x
  3. Step 3: Cross multiply
    6,785.99x = 9,364.75 × 3,914.05
  4. Step 4: Simplify right side
    6,785.99x = 36,654,099.74
  5. Step 5: Solve for x
    x = 36,654,099.74/6,785.99
  6. Step 6: Final answer
    x = 5,401.44

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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.