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Finding the Fourth Proportional to 8,906.40, 12,289.46 and 4,927.54

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Solution

The fourth proportional to 8,906.40, 12,289.46 and 4,927.54 is: 6,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.40 : 12,289.46 = 4,927.54 : x
  2. Step 2: Convert to fraction form
    8,906.40/12,289.46 = 4,927.54/x
  3. Step 3: Cross multiply
    8,906.40x = 12,289.46 × 4,927.54
  4. Step 4: Simplify right side
    8,906.40x = 60,556,805.73
  5. Step 5: Solve for x
    x = 60,556,805.73/8,906.40
  6. Step 6: Final answer
    x = 6,799.25

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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.