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Finding the Fourth Proportional to 7,961.09, 10,985.09 and 4,774.32

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Solution

The fourth proportional to 7,961.09, 10,985.09 and 4,774.32 is: 6,587.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,961.09 : 10,985.09 = 4,774.32 : x
  2. Step 2: Convert to fraction form
    7,961.09/10,985.09 = 4,774.32/x
  3. Step 3: Cross multiply
    7,961.09x = 10,985.09 × 4,774.32
  4. Step 4: Simplify right side
    7,961.09x = 52,446,311.02
  5. Step 5: Solve for x
    x = 52,446,311.02/7,961.09
  6. Step 6: Final answer
    x = 6,587.83

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.