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Finding the Fourth Proportional to 9,485.81, 13,096.58 and 8,489.37

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Solution

The fourth proportional to 9,485.81, 13,096.58 and 8,489.37 is: 11,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,485.81 : 13,096.58 = 8,489.37 : x
  2. Step 2: Convert to fraction form
    9,485.81/13,096.58 = 8,489.37/x
  3. Step 3: Cross multiply
    9,485.81x = 13,096.58 × 8,489.37
  4. Step 4: Simplify right side
    9,485.81x = 111,181,670.91
  5. Step 5: Solve for x
    x = 111,181,670.91/9,485.81
  6. Step 6: Final answer
    x = 11,720.85

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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.