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Finding the Fourth Proportional to 3,628, 5,007.18 and 2,212.12

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Solution

The fourth proportional to 3,628, 5,007.18 and 2,212.12 is: 3,053.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628 : 5,007.18 = 2,212.12 : x
  2. Step 2: Convert to fraction form
    3,628/5,007.18 = 2,212.12/x
  3. Step 3: Cross multiply
    3,628x = 5,007.18 × 2,212.12
  4. Step 4: Simplify right side
    3,628x = 11,076,483.02
  5. Step 5: Solve for x
    x = 11,076,483.02/3,628
  6. Step 6: Final answer
    x = 3,053.05

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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.