Home / 7,621.82-11,431.34-3,460.84

Finding the Fourth Proportional to 7,621.82, 11,431.34 and 3,460.84

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Solution

The fourth proportional to 7,621.82, 11,431.34 and 3,460.84 is: 5,190.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.82 : 11,431.34 = 3,460.84 : x
  2. Step 2: Convert to fraction form
    7,621.82/11,431.34 = 3,460.84/x
  3. Step 3: Cross multiply
    7,621.82x = 11,431.34 × 3,460.84
  4. Step 4: Simplify right side
    7,621.82x = 39,562,038.73
  5. Step 5: Solve for x
    x = 39,562,038.73/7,621.82
  6. Step 6: Final answer
    x = 5,190.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.