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Finding the Fourth Proportional to 4,441, 6,661.32 and 1,320.88

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Solution

The fourth proportional to 4,441, 6,661.32 and 1,320.88 is: 1,981.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,441 : 6,661.32 = 1,320.88 : x
  2. Step 2: Convert to fraction form
    4,441/6,661.32 = 1,320.88/x
  3. Step 3: Cross multiply
    4,441x = 6,661.32 × 1,320.88
  4. Step 4: Simplify right side
    4,441x = 8,798,804.36
  5. Step 5: Solve for x
    x = 8,798,804.36/4,441
  6. Step 6: Final answer
    x = 1,981.27

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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.