Home / 7,790.49-11,685.75-3,408.29

Finding the Fourth Proportional to 7,790.49, 11,685.75 and 3,408.29

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Solution

The fourth proportional to 7,790.49, 11,685.75 and 3,408.29 is: 5,112.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.49 : 11,685.75 = 3,408.29 : x
  2. Step 2: Convert to fraction form
    7,790.49/11,685.75 = 3,408.29/x
  3. Step 3: Cross multiply
    7,790.49x = 11,685.75 × 3,408.29
  4. Step 4: Simplify right side
    7,790.49x = 39,828,366.44
  5. Step 5: Solve for x
    x = 39,828,366.44/7,790.49
  6. Step 6: Final answer
    x = 5,112.43

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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.