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Finding the Fourth Proportional to 6,671.44, 9,209.28 and 4,021.12

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Solution

The fourth proportional to 6,671.44, 9,209.28 and 4,021.12 is: 5,550.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.44 : 9,209.28 = 4,021.12 : x
  2. Step 2: Convert to fraction form
    6,671.44/9,209.28 = 4,021.12/x
  3. Step 3: Cross multiply
    6,671.44x = 9,209.28 × 4,021.12
  4. Step 4: Simplify right side
    6,671.44x = 37,031,619.99
  5. Step 5: Solve for x
    x = 37,031,619.99/6,671.44
  6. Step 6: Final answer
    x = 5,550.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.