Home / 3,678.08-5,515.22-1,080.68

Finding the Fourth Proportional to 3,678.08, 5,515.22 and 1,080.68

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Solution

The fourth proportional to 3,678.08, 5,515.22 and 1,080.68 is: 1,620.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.08 : 5,515.22 = 1,080.68 : x
  2. Step 2: Convert to fraction form
    3,678.08/5,515.22 = 1,080.68/x
  3. Step 3: Cross multiply
    3,678.08x = 5,515.22 × 1,080.68
  4. Step 4: Simplify right side
    3,678.08x = 5,960,163.08
  5. Step 5: Solve for x
    x = 5,960,163.08/3,678.08
  6. Step 6: Final answer
    x = 1,620.46

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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.