Home / 1,986.64-2,739.90-1,724.20

Finding the Fourth Proportional to 1,986.64, 2,739.90 and 1,724.20

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Solution

The fourth proportional to 1,986.64, 2,739.90 and 1,724.20 is: 2,377.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986.64 : 2,739.90 = 1,724.20 : x
  2. Step 2: Convert to fraction form
    1,986.64/2,739.90 = 1,724.20/x
  3. Step 3: Cross multiply
    1,986.64x = 2,739.90 × 1,724.20
  4. Step 4: Simplify right side
    1,986.64x = 4,724,135.58
  5. Step 5: Solve for x
    x = 4,724,135.58/1,986.64
  6. Step 6: Final answer
    x = 2,377.95

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.