Home / 2,986.16-4,120.95-1,641.83

Finding the Fourth Proportional to 2,986.16, 4,120.95 and 1,641.83

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Solution

The fourth proportional to 2,986.16, 4,120.95 and 1,641.83 is: 2,265.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986.16 : 4,120.95 = 1,641.83 : x
  2. Step 2: Convert to fraction form
    2,986.16/4,120.95 = 1,641.83/x
  3. Step 3: Cross multiply
    2,986.16x = 4,120.95 × 1,641.83
  4. Step 4: Simplify right side
    2,986.16x = 6,765,901.37
  5. Step 5: Solve for x
    x = 6,765,901.37/2,986.16
  6. Step 6: Final answer
    x = 2,265.75

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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.