Home / 8,490.20-12,728.04-3,222.26

Finding the Fourth Proportional to 8,490.20, 12,728.04 and 3,222.26

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Solution

The fourth proportional to 8,490.20, 12,728.04 and 3,222.26 is: 4,830.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.20 : 12,728.04 = 3,222.26 : x
  2. Step 2: Convert to fraction form
    8,490.20/12,728.04 = 3,222.26/x
  3. Step 3: Cross multiply
    8,490.20x = 12,728.04 × 3,222.26
  4. Step 4: Simplify right side
    8,490.20x = 41,013,054.17
  5. Step 5: Solve for x
    x = 41,013,054.17/8,490.20
  6. Step 6: Final answer
    x = 4,830.63

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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.