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Finding the Fourth Proportional to 7,760.40, 11,631.40 and 4,466.72

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Solution

The fourth proportional to 7,760.40, 11,631.40 and 4,466.72 is: 6,694.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,760.40 : 11,631.40 = 4,466.72 : x
  2. Step 2: Convert to fraction form
    7,760.40/11,631.40 = 4,466.72/x
  3. Step 3: Cross multiply
    7,760.40x = 11,631.40 × 4,466.72
  4. Step 4: Simplify right side
    7,760.40x = 51,954,207.01
  5. Step 5: Solve for x
    x = 51,954,207.01/7,760.40
  6. Step 6: Final answer
    x = 6,694.78

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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.