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Finding the Fourth Proportional to 6,187.86, 8,539.56 and 3,947.94

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Solution

The fourth proportional to 6,187.86, 8,539.56 and 3,947.94 is: 5,448.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,187.86 : 8,539.56 = 3,947.94 : x
  2. Step 2: Convert to fraction form
    6,187.86/8,539.56 = 3,947.94/x
  3. Step 3: Cross multiply
    6,187.86x = 8,539.56 × 3,947.94
  4. Step 4: Simplify right side
    6,187.86x = 33,713,670.51
  5. Step 5: Solve for x
    x = 33,713,670.51/6,187.86
  6. Step 6: Final answer
    x = 5,448.36

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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.