Home / 8,191.40-12,290.21-4,906.85

Finding the Fourth Proportional to 8,191.40, 12,290.21 and 4,906.85

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Solution

The fourth proportional to 8,191.40, 12,290.21 and 4,906.85 is: 7,362.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,191.40 : 12,290.21 = 4,906.85 : x
  2. Step 2: Convert to fraction form
    8,191.40/12,290.21 = 4,906.85/x
  3. Step 3: Cross multiply
    8,191.40x = 12,290.21 × 4,906.85
  4. Step 4: Simplify right side
    8,191.40x = 60,306,192.40
  5. Step 5: Solve for x
    x = 60,306,192.40/8,191.40
  6. Step 6: Final answer
    x = 7,362.13

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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.