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Finding the Fourth Proportional to 8,505, 11,736.90 and 4,779

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Solution

The fourth proportional to 8,505, 11,736.90 and 4,779 is: 6,595.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,505 : 11,736.90 = 4,779 : x
  2. Step 2: Convert to fraction form
    8,505/11,736.90 = 4,779/x
  3. Step 3: Cross multiply
    8,505x = 11,736.90 × 4,779
  4. Step 4: Simplify right side
    8,505x = 56,090,645.10
  5. Step 5: Solve for x
    x = 56,090,645.10/8,505
  6. Step 6: Final answer
    x = 6,595.02

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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.