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Finding the Fourth Proportional to 8,906.48, 12,291.48 and 5,369.84

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Solution

The fourth proportional to 8,906.48, 12,291.48 and 5,369.84 is: 7,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.48 : 12,291.48 = 5,369.84 : x
  2. Step 2: Convert to fraction form
    8,906.48/12,291.48 = 5,369.84/x
  3. Step 3: Cross multiply
    8,906.48x = 12,291.48 × 5,369.84
  4. Step 4: Simplify right side
    8,906.48x = 66,003,280.96
  5. Step 5: Solve for x
    x = 66,003,280.96/8,906.48
  6. Step 6: Final answer
    x = 7,410.70

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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.