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Finding the Fourth Proportional to 28,905.02, 43,354.02 and 7,843.72

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Solution

The fourth proportional to 28,905.02, 43,354.02 and 7,843.72 is: 11,764.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,905.02 : 43,354.02 = 7,843.72 : x
  2. Step 2: Convert to fraction form
    28,905.02/43,354.02 = 7,843.72/x
  3. Step 3: Cross multiply
    28,905.02x = 43,354.02 × 7,843.72
  4. Step 4: Simplify right side
    28,905.02x = 340,056,793.75
  5. Step 5: Solve for x
    x = 340,056,793.75/28,905.02
  6. Step 6: Final answer
    x = 11,764.63

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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.