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Finding the Fourth Proportional to 6,671.58, 10,007.86 and 1,991.22

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Solution

The fourth proportional to 6,671.58, 10,007.86 and 1,991.22 is: 2,986.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.58 : 10,007.86 = 1,991.22 : x
  2. Step 2: Convert to fraction form
    6,671.58/10,007.86 = 1,991.22/x
  3. Step 3: Cross multiply
    6,671.58x = 10,007.86 × 1,991.22
  4. Step 4: Simplify right side
    6,671.58x = 19,927,850.99
  5. Step 5: Solve for x
    x = 19,927,850.99/6,671.58
  6. Step 6: Final answer
    x = 2,986.98

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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.