Home / 7,779.80-11,670.43-3,098.68

Finding the Fourth Proportional to 7,779.80, 11,670.43 and 3,098.68

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Solution

The fourth proportional to 7,779.80, 11,670.43 and 3,098.68 is: 4,648.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.80 : 11,670.43 = 3,098.68 : x
  2. Step 2: Convert to fraction form
    7,779.80/11,670.43 = 3,098.68/x
  3. Step 3: Cross multiply
    7,779.80x = 11,670.43 × 3,098.68
  4. Step 4: Simplify right side
    7,779.80x = 36,162,928.03
  5. Step 5: Solve for x
    x = 36,162,928.03/7,779.80
  6. Step 6: Final answer
    x = 4,648.31

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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.