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Finding the Fourth Proportional to 7,885.44, 11,807.96 and 7,651.86

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Solution

The fourth proportional to 7,885.44, 11,807.96 and 7,651.86 is: 11,458.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.44 : 11,807.96 = 7,651.86 : x
  2. Step 2: Convert to fraction form
    7,885.44/11,807.96 = 7,651.86/x
  3. Step 3: Cross multiply
    7,885.44x = 11,807.96 × 7,651.86
  4. Step 4: Simplify right side
    7,885.44x = 90,352,856.81
  5. Step 5: Solve for x
    x = 90,352,856.81/7,885.44
  6. Step 6: Final answer
    x = 11,458.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.