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Finding the Fourth Proportional to 3,887.63, 5,365.01 and 2,208.77

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Solution

The fourth proportional to 3,887.63, 5,365.01 and 2,208.77 is: 3,048.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.63 : 5,365.01 = 2,208.77 : x
  2. Step 2: Convert to fraction form
    3,887.63/5,365.01 = 2,208.77/x
  3. Step 3: Cross multiply
    3,887.63x = 5,365.01 × 2,208.77
  4. Step 4: Simplify right side
    3,887.63x = 11,850,051.83
  5. Step 5: Solve for x
    x = 11,850,051.83/3,887.63
  6. Step 6: Final answer
    x = 3,048.15

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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.