Home / 3,678.12-5,516.55-1,080.36

Finding the Fourth Proportional to 3,678.12, 5,516.55 and 1,080.36

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Solution

The fourth proportional to 3,678.12, 5,516.55 and 1,080.36 is: 1,620.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,678.12 : 5,516.55 = 1,080.36 : x
  2. Step 2: Convert to fraction form
    3,678.12/5,516.55 = 1,080.36/x
  3. Step 3: Cross multiply
    3,678.12x = 5,516.55 × 1,080.36
  4. Step 4: Simplify right side
    3,678.12x = 5,959,859.96
  5. Step 5: Solve for x
    x = 5,959,859.96/3,678.12
  6. Step 6: Final answer
    x = 1,620.35

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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.