Home / 3,036.50-4,190.34-1,778.21

Finding the Fourth Proportional to 3,036.50, 4,190.34 and 1,778.21

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Solution

The fourth proportional to 3,036.50, 4,190.34 and 1,778.21 is: 2,453.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,036.50 : 4,190.34 = 1,778.21 : x
  2. Step 2: Convert to fraction form
    3,036.50/4,190.34 = 1,778.21/x
  3. Step 3: Cross multiply
    3,036.50x = 4,190.34 × 1,778.21
  4. Step 4: Simplify right side
    3,036.50x = 7,451,274.65
  5. Step 5: Solve for x
    x = 7,451,274.65/3,036.50
  6. Step 6: Final answer
    x = 2,453.90

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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.