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Finding the Fourth Proportional to 7,779.99, 11,675.37 and 3,099.54

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Solution

The fourth proportional to 7,779.99, 11,675.37 and 3,099.54 is: 4,651.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.99 : 11,675.37 = 3,099.54 : x
  2. Step 2: Convert to fraction form
    7,779.99/11,675.37 = 3,099.54/x
  3. Step 3: Cross multiply
    7,779.99x = 11,675.37 × 3,099.54
  4. Step 4: Simplify right side
    7,779.99x = 36,188,276.33
  5. Step 5: Solve for x
    x = 36,188,276.33/7,779.99
  6. Step 6: Final answer
    x = 4,651.46

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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.