Home / 3,056.50-4,220.55-1,939.42

Finding the Fourth Proportional to 3,056.50, 4,220.55 and 1,939.42

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Solution

The fourth proportional to 3,056.50, 4,220.55 and 1,939.42 is: 2,678.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,056.50 : 4,220.55 = 1,939.42 : x
  2. Step 2: Convert to fraction form
    3,056.50/4,220.55 = 1,939.42/x
  3. Step 3: Cross multiply
    3,056.50x = 4,220.55 × 1,939.42
  4. Step 4: Simplify right side
    3,056.50x = 8,185,419.08
  5. Step 5: Solve for x
    x = 8,185,419.08/3,056.50
  6. Step 6: Final answer
    x = 2,678.04

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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.