Home / 4,920.72-6,790.20-2,796.30

Finding the Fourth Proportional to 4,920.72, 6,790.20 and 2,796.30

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Solution

The fourth proportional to 4,920.72, 6,790.20 and 2,796.30 is: 3,858.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,920.72 : 6,790.20 = 2,796.30 : x
  2. Step 2: Convert to fraction form
    4,920.72/6,790.20 = 2,796.30/x
  3. Step 3: Cross multiply
    4,920.72x = 6,790.20 × 2,796.30
  4. Step 4: Simplify right side
    4,920.72x = 18,987,436.26
  5. Step 5: Solve for x
    x = 18,987,436.26/4,920.72
  6. Step 6: Final answer
    x = 3,858.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.