Home / 3,326.28-4,990.01-1,378.64

Finding the Fourth Proportional to 3,326.28, 4,990.01 and 1,378.64

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Solution

The fourth proportional to 3,326.28, 4,990.01 and 1,378.64 is: 2,068.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.28 : 4,990.01 = 1,378.64 : x
  2. Step 2: Convert to fraction form
    3,326.28/4,990.01 = 1,378.64/x
  3. Step 3: Cross multiply
    3,326.28x = 4,990.01 × 1,378.64
  4. Step 4: Simplify right side
    3,326.28x = 6,879,395.54
  5. Step 5: Solve for x
    x = 6,879,395.54/3,326.28
  6. Step 6: Final answer
    x = 2,068.19

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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.