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Finding the Fourth Proportional to 8,318.54, 12,402.14 and 7,383.60

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Solution

The fourth proportional to 8,318.54, 12,402.14 and 7,383.60 is: 11,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.54 : 12,402.14 = 7,383.60 : x
  2. Step 2: Convert to fraction form
    8,318.54/12,402.14 = 7,383.60/x
  3. Step 3: Cross multiply
    8,318.54x = 12,402.14 × 7,383.60
  4. Step 4: Simplify right side
    8,318.54x = 91,572,403.99
  5. Step 5: Solve for x
    x = 91,572,403.99/8,318.54
  6. Step 6: Final answer
    x = 11,008.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.