Home / 3,005.66-4,147.79-1,661.36

Finding the Fourth Proportional to 3,005.66, 4,147.79 and 1,661.36

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Solution

The fourth proportional to 3,005.66, 4,147.79 and 1,661.36 is: 2,292.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,005.66 : 4,147.79 = 1,661.36 : x
  2. Step 2: Convert to fraction form
    3,005.66/4,147.79 = 1,661.36/x
  3. Step 3: Cross multiply
    3,005.66x = 4,147.79 × 1,661.36
  4. Step 4: Simplify right side
    3,005.66x = 6,890,943.35
  5. Step 5: Solve for x
    x = 6,890,943.35/3,005.66
  6. Step 6: Final answer
    x = 2,292.66

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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.