Home / 1,636.12-2,455.04-1,080.80

Finding the Fourth Proportional to 1,636.12, 2,455.04 and 1,080.80

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Solution

The fourth proportional to 1,636.12, 2,455.04 and 1,080.80 is: 1,621.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.12 : 2,455.04 = 1,080.80 : x
  2. Step 2: Convert to fraction form
    1,636.12/2,455.04 = 1,080.80/x
  3. Step 3: Cross multiply
    1,636.12x = 2,455.04 × 1,080.80
  4. Step 4: Simplify right side
    1,636.12x = 2,653,407.23
  5. Step 5: Solve for x
    x = 2,653,407.23/1,636.12
  6. Step 6: Final answer
    x = 1,621.77

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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.