Home / 3,412.10-5,109.04-2,172.80

Finding the Fourth Proportional to 3,412.10, 5,109.04 and 2,172.80

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Solution

The fourth proportional to 3,412.10, 5,109.04 and 2,172.80 is: 3,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,412.10 : 5,109.04 = 2,172.80 : x
  2. Step 2: Convert to fraction form
    3,412.10/5,109.04 = 2,172.80/x
  3. Step 3: Cross multiply
    3,412.10x = 5,109.04 × 2,172.80
  4. Step 4: Simplify right side
    3,412.10x = 11,100,922.11
  5. Step 5: Solve for x
    x = 11,100,922.11/3,412.10
  6. Step 6: Final answer
    x = 3,253.40

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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.