Home / 3,188.28-4,780.35-1,108.14

Finding the Fourth Proportional to 3,188.28, 4,780.35 and 1,108.14

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Solution

The fourth proportional to 3,188.28, 4,780.35 and 1,108.14 is: 1,661.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.28 : 4,780.35 = 1,108.14 : x
  2. Step 2: Convert to fraction form
    3,188.28/4,780.35 = 1,108.14/x
  3. Step 3: Cross multiply
    3,188.28x = 4,780.35 × 1,108.14
  4. Step 4: Simplify right side
    3,188.28x = 5,297,297.05
  5. Step 5: Solve for x
    x = 5,297,297.05/3,188.28
  6. Step 6: Final answer
    x = 1,661.49

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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.