Home / 7,672.50-11,511.45-3,779.64

Finding the Fourth Proportional to 7,672.50, 11,511.45 and 3,779.64

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Solution

The fourth proportional to 7,672.50, 11,511.45 and 3,779.64 is: 5,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,672.50 : 11,511.45 = 3,779.64 : x
  2. Step 2: Convert to fraction form
    7,672.50/11,511.45 = 3,779.64/x
  3. Step 3: Cross multiply
    7,672.50x = 11,511.45 × 3,779.64
  4. Step 4: Simplify right side
    7,672.50x = 43,509,136.88
  5. Step 5: Solve for x
    x = 43,509,136.88/7,672.50
  6. Step 6: Final answer
    x = 5,670.79

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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.