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Finding the Fourth Proportional to 7,779.96, 11,669.94 and 2,850.72

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Solution

The fourth proportional to 7,779.96, 11,669.94 and 2,850.72 is: 4,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.96 : 11,669.94 = 2,850.72 : x
  2. Step 2: Convert to fraction form
    7,779.96/11,669.94 = 2,850.72/x
  3. Step 3: Cross multiply
    7,779.96x = 11,669.94 × 2,850.72
  4. Step 4: Simplify right side
    7,779.96x = 33,267,731.36
  5. Step 5: Solve for x
    x = 33,267,731.36/7,779.96
  6. Step 6: Final answer
    x = 4,276.08

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Double scale
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Similar ratio
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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.