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Finding the Fourth Proportional to 6,111, 8,438.34 and 3,876.84

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Solution

The fourth proportional to 6,111, 8,438.34 and 3,876.84 is: 5,353.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,111 : 8,438.34 = 3,876.84 : x
  2. Step 2: Convert to fraction form
    6,111/8,438.34 = 3,876.84/x
  3. Step 3: Cross multiply
    6,111x = 8,438.34 × 3,876.84
  4. Step 4: Simplify right side
    6,111x = 32,714,094.05
  5. Step 5: Solve for x
    x = 32,714,094.05/6,111
  6. Step 6: Final answer
    x = 5,353.31

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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.