Home / 3,326.28-4,989.64-1,378.64

Finding the Fourth Proportional to 3,326.28, 4,989.64 and 1,378.64

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Solution

The fourth proportional to 3,326.28, 4,989.64 and 1,378.64 is: 2,068.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.28 : 4,989.64 = 1,378.64 : x
  2. Step 2: Convert to fraction form
    3,326.28/4,989.64 = 1,378.64/x
  3. Step 3: Cross multiply
    3,326.28x = 4,989.64 × 1,378.64
  4. Step 4: Simplify right side
    3,326.28x = 6,878,917.29
  5. Step 5: Solve for x
    x = 6,878,917.29/3,326.28
  6. Step 6: Final answer
    x = 2,068.05

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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.