Home / 3,479.12-5,221.60-1,836.84

Finding the Fourth Proportional to 3,479.12, 5,221.60 and 1,836.84

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Solution

The fourth proportional to 3,479.12, 5,221.60 and 1,836.84 is: 2,756.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.12 : 5,221.60 = 1,836.84 : x
  2. Step 2: Convert to fraction form
    3,479.12/5,221.60 = 1,836.84/x
  3. Step 3: Cross multiply
    3,479.12x = 5,221.60 × 1,836.84
  4. Step 4: Simplify right side
    3,479.12x = 9,591,243.74
  5. Step 5: Solve for x
    x = 9,591,243.74/3,479.12
  6. Step 6: Final answer
    x = 2,756.80

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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.