Home / 3,608.20-5,416.35-2,790.10

Finding the Fourth Proportional to 3,608.20, 5,416.35 and 2,790.10

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Solution

The fourth proportional to 3,608.20, 5,416.35 and 2,790.10 is: 4,188.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,608.20 : 5,416.35 = 2,790.10 : x
  2. Step 2: Convert to fraction form
    3,608.20/5,416.35 = 2,790.10/x
  3. Step 3: Cross multiply
    3,608.20x = 5,416.35 × 2,790.10
  4. Step 4: Simplify right side
    3,608.20x = 15,112,158.14
  5. Step 5: Solve for x
    x = 15,112,158.14/3,608.20
  6. Step 6: Final answer
    x = 4,188.28

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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.