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Finding the Fourth Proportional to 3,899.98, 5,365.60 and 3,403.77

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Solution

The fourth proportional to 3,899.98, 5,365.60 and 3,403.77 is: 4,682.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899.98 : 5,365.60 = 3,403.77 : x
  2. Step 2: Convert to fraction form
    3,899.98/5,365.60 = 3,403.77/x
  3. Step 3: Cross multiply
    3,899.98x = 5,365.60 × 3,403.77
  4. Step 4: Simplify right side
    3,899.98x = 18,263,268.31
  5. Step 5: Solve for x
    x = 18,263,268.31/3,899.98
  6. Step 6: Final answer
    x = 4,682.91

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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.