Home / 8,191.72-12,290.30-3,260.03

Finding the Fourth Proportional to 8,191.72, 12,290.30 and 3,260.03

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Solution

The fourth proportional to 8,191.72, 12,290.30 and 3,260.03 is: 4,891.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.72 : 12,290.30 = 3,260.03 : x
  2. Step 2: Convert to fraction form
    8,191.72/12,290.30 = 3,260.03/x
  3. Step 3: Cross multiply
    8,191.72x = 12,290.30 × 3,260.03
  4. Step 4: Simplify right side
    8,191.72x = 40,066,730.41
  5. Step 5: Solve for x
    x = 40,066,730.41/8,191.72
  6. Step 6: Final answer
    x = 4,891.13

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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.