Home / 3,221.51-4,830.69-1,372.19

Finding the Fourth Proportional to 3,221.51, 4,830.69 and 1,372.19

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Solution

The fourth proportional to 3,221.51, 4,830.69 and 1,372.19 is: 2,057.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,221.51 : 4,830.69 = 1,372.19 : x
  2. Step 2: Convert to fraction form
    3,221.51/4,830.69 = 1,372.19/x
  3. Step 3: Cross multiply
    3,221.51x = 4,830.69 × 1,372.19
  4. Step 4: Simplify right side
    3,221.51x = 6,628,624.51
  5. Step 5: Solve for x
    x = 6,628,624.51/3,221.51
  6. Step 6: Final answer
    x = 2,057.61

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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.