Home / 7,790.36-11,688.26-3,408.14

Finding the Fourth Proportional to 7,790.36, 11,688.26 and 3,408.14

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Solution

The fourth proportional to 7,790.36, 11,688.26 and 3,408.14 is: 5,113.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.36 : 11,688.26 = 3,408.14 : x
  2. Step 2: Convert to fraction form
    7,790.36/11,688.26 = 3,408.14/x
  3. Step 3: Cross multiply
    7,790.36x = 11,688.26 × 3,408.14
  4. Step 4: Simplify right side
    7,790.36x = 39,835,238.62
  5. Step 5: Solve for x
    x = 39,835,238.62/7,790.36
  6. Step 6: Final answer
    x = 5,113.40

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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.