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Finding the Fourth Proportional to 9,372.48, 12,929.60 and 6,189.12

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Solution

The fourth proportional to 9,372.48, 12,929.60 and 6,189.12 is: 8,538.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,372.48 : 12,929.60 = 6,189.12 : x
  2. Step 2: Convert to fraction form
    9,372.48/12,929.60 = 6,189.12/x
  3. Step 3: Cross multiply
    9,372.48x = 12,929.60 × 6,189.12
  4. Step 4: Simplify right side
    9,372.48x = 80,022,845.95
  5. Step 5: Solve for x
    x = 80,022,845.95/9,372.48
  6. Step 6: Final answer
    x = 8,538.07

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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.