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Finding the Fourth Proportional to 4,912.56, 6,765.12 and 4,815.36

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Solution

The fourth proportional to 4,912.56, 6,765.12 and 4,815.36 is: 6,631.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.56 : 6,765.12 = 4,815.36 : x
  2. Step 2: Convert to fraction form
    4,912.56/6,765.12 = 4,815.36/x
  3. Step 3: Cross multiply
    4,912.56x = 6,765.12 × 4,815.36
  4. Step 4: Simplify right side
    4,912.56x = 32,576,488.24
  5. Step 5: Solve for x
    x = 32,576,488.24/4,912.56
  6. Step 6: Final answer
    x = 6,631.27

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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.