Home / 3,783.20-5,674.05-1,318.16

Finding the Fourth Proportional to 3,783.20, 5,674.05 and 1,318.16

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Solution

The fourth proportional to 3,783.20, 5,674.05 and 1,318.16 is: 1,976.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,783.20 : 5,674.05 = 1,318.16 : x
  2. Step 2: Convert to fraction form
    3,783.20/5,674.05 = 1,318.16/x
  3. Step 3: Cross multiply
    3,783.20x = 5,674.05 × 1,318.16
  4. Step 4: Simplify right side
    3,783.20x = 7,479,305.75
  5. Step 5: Solve for x
    x = 7,479,305.75/3,783.20
  6. Step 6: Final answer
    x = 1,976.98

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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.