Home / 7,790.83-11,690.87-3,113.04

Finding the Fourth Proportional to 7,790.83, 11,690.87 and 3,113.04

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Solution

The fourth proportional to 7,790.83, 11,690.87 and 3,113.04 is: 4,671.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,790.83 : 11,690.87 = 3,113.04 : x
  2. Step 2: Convert to fraction form
    7,790.83/11,690.87 = 3,113.04/x
  3. Step 3: Cross multiply
    7,790.83x = 11,690.87 × 3,113.04
  4. Step 4: Simplify right side
    7,790.83x = 36,394,174.22
  5. Step 5: Solve for x
    x = 36,394,174.22/7,790.83
  6. Step 6: Final answer
    x = 4,671.41

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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.