Home / 7,779.05-11,661.20-3,101.93

Finding the Fourth Proportional to 7,779.05, 11,661.20 and 3,101.93

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Solution

The fourth proportional to 7,779.05, 11,661.20 and 3,101.93 is: 4,649.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,779.05 : 11,661.20 = 3,101.93 : x
  2. Step 2: Convert to fraction form
    7,779.05/11,661.20 = 3,101.93/x
  3. Step 3: Cross multiply
    7,779.05x = 11,661.20 × 3,101.93
  4. Step 4: Simplify right side
    7,779.05x = 36,172,226.12
  5. Step 5: Solve for x
    x = 36,172,226.12/7,779.05
  6. Step 6: Final answer
    x = 4,649.95

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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.