Home / 3,208.19-4,806.05-2,109.21

Finding the Fourth Proportional to 3,208.19, 4,806.05 and 2,109.21

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Solution

The fourth proportional to 3,208.19, 4,806.05 and 2,109.21 is: 3,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,208.19 : 4,806.05 = 2,109.21 : x
  2. Step 2: Convert to fraction form
    3,208.19/4,806.05 = 2,109.21/x
  3. Step 3: Cross multiply
    3,208.19x = 4,806.05 × 2,109.21
  4. Step 4: Simplify right side
    3,208.19x = 10,136,958.17
  5. Step 5: Solve for x
    x = 10,136,958.17/3,208.19
  6. Step 6: Final answer
    x = 3,159.72

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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.