Home / 6,121.70-8,447.37-4,235.30

Finding the Fourth Proportional to 6,121.70, 8,447.37 and 4,235.30

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Solution

The fourth proportional to 6,121.70, 8,447.37 and 4,235.30 is: 5,844.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,121.70 : 8,447.37 = 4,235.30 : x
  2. Step 2: Convert to fraction form
    6,121.70/8,447.37 = 4,235.30/x
  3. Step 3: Cross multiply
    6,121.70x = 8,447.37 × 4,235.30
  4. Step 4: Simplify right side
    6,121.70x = 35,777,146.16
  5. Step 5: Solve for x
    x = 35,777,146.16/6,121.70
  6. Step 6: Final answer
    x = 5,844.32

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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.