Home / 6,420.83-9,630.84-2,261.21

Finding the Fourth Proportional to 6,420.83, 9,630.84 and 2,261.21

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Solution

The fourth proportional to 6,420.83, 9,630.84 and 2,261.21 is: 3,391.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.83 : 9,630.84 = 2,261.21 : x
  2. Step 2: Convert to fraction form
    6,420.83/9,630.84 = 2,261.21/x
  3. Step 3: Cross multiply
    6,420.83x = 9,630.84 × 2,261.21
  4. Step 4: Simplify right side
    6,420.83x = 21,777,351.72
  5. Step 5: Solve for x
    x = 21,777,351.72/6,420.83
  6. Step 6: Final answer
    x = 3,391.67

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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.