Home / 3,281.41-4,919.07-1,089.64

Finding the Fourth Proportional to 3,281.41, 4,919.07 and 1,089.64

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Solution

The fourth proportional to 3,281.41, 4,919.07 and 1,089.64 is: 1,633.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.41 : 4,919.07 = 1,089.64 : x
  2. Step 2: Convert to fraction form
    3,281.41/4,919.07 = 1,089.64/x
  3. Step 3: Cross multiply
    3,281.41x = 4,919.07 × 1,089.64
  4. Step 4: Simplify right side
    3,281.41x = 5,359,990.84
  5. Step 5: Solve for x
    x = 5,359,990.84/3,281.41
  6. Step 6: Final answer
    x = 1,633.44

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1.5x scale

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.