Home / 4,999.20-6,896.88-3,109.44

Finding the Fourth Proportional to 4,999.20, 6,896.88 and 3,109.44

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Solution

The fourth proportional to 4,999.20, 6,896.88 and 3,109.44 is: 4,289.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.20 : 6,896.88 = 3,109.44 : x
  2. Step 2: Convert to fraction form
    4,999.20/6,896.88 = 3,109.44/x
  3. Step 3: Cross multiply
    4,999.20x = 6,896.88 × 3,109.44
  4. Step 4: Simplify right side
    4,999.20x = 21,445,434.55
  5. Step 5: Solve for x
    x = 21,445,434.55/4,999.20
  6. Step 6: Final answer
    x = 4,289.77

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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.