Home / 6,115.21-8,436.42-4,122.31

Finding the Fourth Proportional to 6,115.21, 8,436.42 and 4,122.31

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Solution

The fourth proportional to 6,115.21, 8,436.42 and 4,122.31 is: 5,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.21 : 8,436.42 = 4,122.31 : x
  2. Step 2: Convert to fraction form
    6,115.21/8,436.42 = 4,122.31/x
  3. Step 3: Cross multiply
    6,115.21x = 8,436.42 × 4,122.31
  4. Step 4: Simplify right side
    6,115.21x = 34,777,538.53
  5. Step 5: Solve for x
    x = 34,777,538.53/6,115.21
  6. Step 6: Final answer
    x = 5,687.06

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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.