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Finding the Fourth Proportional to 9,622.40, 14,390.40 and 8,067.20

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Solution

The fourth proportional to 9,622.40, 14,390.40 and 8,067.20 is: 12,064.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,622.40 : 14,390.40 = 8,067.20 : x
  2. Step 2: Convert to fraction form
    9,622.40/14,390.40 = 8,067.20/x
  3. Step 3: Cross multiply
    9,622.40x = 14,390.40 × 8,067.20
  4. Step 4: Simplify right side
    9,622.40x = 116,090,234.88
  5. Step 5: Solve for x
    x = 116,090,234.88/9,622.40
  6. Step 6: Final answer
    x = 12,064.58

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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.