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Finding the Fourth Proportional to 4,999.85, 6,899.79 and 2,761.88

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Solution

The fourth proportional to 4,999.85, 6,899.79 and 2,761.88 is: 3,811.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.85 : 6,899.79 = 2,761.88 : x
  2. Step 2: Convert to fraction form
    4,999.85/6,899.79 = 2,761.88/x
  3. Step 3: Cross multiply
    4,999.85x = 6,899.79 × 2,761.88
  4. Step 4: Simplify right side
    4,999.85x = 19,056,357.51
  5. Step 5: Solve for x
    x = 19,056,357.51/4,999.85
  6. Step 6: Final answer
    x = 3,811.39

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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.