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Finding the Fourth Proportional to 6,911.28, 9,475.46 and 6,786.74

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Solution

The fourth proportional to 6,911.28, 9,475.46 and 6,786.74 is: 9,304.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,911.28 : 9,475.46 = 6,786.74 : x
  2. Step 2: Convert to fraction form
    6,911.28/9,475.46 = 6,786.74/x
  3. Step 3: Cross multiply
    6,911.28x = 9,475.46 × 6,786.74
  4. Step 4: Simplify right side
    6,911.28x = 64,307,483.40
  5. Step 5: Solve for x
    x = 64,307,483.40/6,911.28
  6. Step 6: Final answer
    x = 9,304.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.