Home / 7,790.50-11,669.99-5,919.70

Finding the Fourth Proportional to 7,790.50, 11,669.99 and 5,919.70

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Solution

The fourth proportional to 7,790.50, 11,669.99 and 5,919.70 is: 8,867.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.50 : 11,669.99 = 5,919.70 : x
  2. Step 2: Convert to fraction form
    7,790.50/11,669.99 = 5,919.70/x
  3. Step 3: Cross multiply
    7,790.50x = 11,669.99 × 5,919.70
  4. Step 4: Simplify right side
    7,790.50x = 69,082,751.85
  5. Step 5: Solve for x
    x = 69,082,751.85/7,790.50
  6. Step 6: Final answer
    x = 8,867.57

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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.