Home / 8,420.19-12,632.11-3,226.06

Finding the Fourth Proportional to 8,420.19, 12,632.11 and 3,226.06

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Solution

The fourth proportional to 8,420.19, 12,632.11 and 3,226.06 is: 4,839.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.19 : 12,632.11 = 3,226.06 : x
  2. Step 2: Convert to fraction form
    8,420.19/12,632.11 = 3,226.06/x
  3. Step 3: Cross multiply
    8,420.19x = 12,632.11 × 3,226.06
  4. Step 4: Simplify right side
    8,420.19x = 40,751,960.24
  5. Step 5: Solve for x
    x = 40,751,960.24/8,420.19
  6. Step 6: Final answer
    x = 4,839.79

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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.