Home / 2,999.08-4,138.72-1,672.80

Finding the Fourth Proportional to 2,999.08, 4,138.72 and 1,672.80

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Solution

The fourth proportional to 2,999.08, 4,138.72 and 1,672.80 is: 2,308.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.08 : 4,138.72 = 1,672.80 : x
  2. Step 2: Convert to fraction form
    2,999.08/4,138.72 = 1,672.80/x
  3. Step 3: Cross multiply
    2,999.08x = 4,138.72 × 1,672.80
  4. Step 4: Simplify right side
    2,999.08x = 6,923,250.82
  5. Step 5: Solve for x
    x = 6,923,250.82/2,999.08
  6. Step 6: Final answer
    x = 2,308.46

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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.