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Finding the Fourth Proportional to 9,800.40, 14,700.60 and 3,226.80

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Solution

The fourth proportional to 9,800.40, 14,700.60 and 3,226.80 is: 4,840.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,800.40 : 14,700.60 = 3,226.80 : x
  2. Step 2: Convert to fraction form
    9,800.40/14,700.60 = 3,226.80/x
  3. Step 3: Cross multiply
    9,800.40x = 14,700.60 × 3,226.80
  4. Step 4: Simplify right side
    9,800.40x = 47,435,896.08
  5. Step 5: Solve for x
    x = 47,435,896.08/9,800.40
  6. Step 6: Final answer
    x = 4,840.20

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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.