Home / 8,128.06-12,193.79-4,619.68

Finding the Fourth Proportional to 8,128.06, 12,193.79 and 4,619.68

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Solution

The fourth proportional to 8,128.06, 12,193.79 and 4,619.68 is: 6,930.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.06 : 12,193.79 = 4,619.68 : x
  2. Step 2: Convert to fraction form
    8,128.06/12,193.79 = 4,619.68/x
  3. Step 3: Cross multiply
    8,128.06x = 12,193.79 × 4,619.68
  4. Step 4: Simplify right side
    8,128.06x = 56,331,354.20
  5. Step 5: Solve for x
    x = 56,331,354.20/8,128.06
  6. Step 6: Final answer
    x = 6,930.48

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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.