Home / 7,790.67-11,687.63-3,406.95

Finding the Fourth Proportional to 7,790.67, 11,687.63 and 3,406.95

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Solution

The fourth proportional to 7,790.67, 11,687.63 and 3,406.95 is: 5,111.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.67 : 11,687.63 = 3,406.95 : x
  2. Step 2: Convert to fraction form
    7,790.67/11,687.63 = 3,406.95/x
  3. Step 3: Cross multiply
    7,790.67x = 11,687.63 × 3,406.95
  4. Step 4: Simplify right side
    7,790.67x = 39,819,153.99
  5. Step 5: Solve for x
    x = 39,819,153.99/7,790.67
  6. Step 6: Final answer
    x = 5,111.13

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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.