Home / 4,119.50-5,685.70-3,221.46

Finding the Fourth Proportional to 4,119.50, 5,685.70 and 3,221.46

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Solution

The fourth proportional to 4,119.50, 5,685.70 and 3,221.46 is: 4,446.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119.50 : 5,685.70 = 3,221.46 : x
  2. Step 2: Convert to fraction form
    4,119.50/5,685.70 = 3,221.46/x
  3. Step 3: Cross multiply
    4,119.50x = 5,685.70 × 3,221.46
  4. Step 4: Simplify right side
    4,119.50x = 18,316,255.12
  5. Step 5: Solve for x
    x = 18,316,255.12/4,119.50
  6. Step 6: Final answer
    x = 4,446.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.