Home / 3,381.72-5,074.80-1,190.40

Finding the Fourth Proportional to 3,381.72, 5,074.80 and 1,190.40

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Solution

The fourth proportional to 3,381.72, 5,074.80 and 1,190.40 is: 1,786.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.72 : 5,074.80 = 1,190.40 : x
  2. Step 2: Convert to fraction form
    3,381.72/5,074.80 = 1,190.40/x
  3. Step 3: Cross multiply
    3,381.72x = 5,074.80 × 1,190.40
  4. Step 4: Simplify right side
    3,381.72x = 6,041,041.92
  5. Step 5: Solve for x
    x = 6,041,041.92/3,381.72
  6. Step 6: Final answer
    x = 1,786.38

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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.