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Finding the Fourth Proportional to 7,665.54, 11,512.90 and 4,764.12

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Solution

The fourth proportional to 7,665.54, 11,512.90 and 4,764.12 is: 7,155.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,665.54 : 11,512.90 = 4,764.12 : x
  2. Step 2: Convert to fraction form
    7,665.54/11,512.90 = 4,764.12/x
  3. Step 3: Cross multiply
    7,665.54x = 11,512.90 × 4,764.12
  4. Step 4: Simplify right side
    7,665.54x = 54,848,837.15
  5. Step 5: Solve for x
    x = 54,848,837.15/7,665.54
  6. Step 6: Final answer
    x = 7,155.25

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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.