Home / 1,197.70-1,790.24-1,080.39

Finding the Fourth Proportional to 1,197.70, 1,790.24 and 1,080.39

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Solution

The fourth proportional to 1,197.70, 1,790.24 and 1,080.39 is: 1,614.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,197.70 : 1,790.24 = 1,080.39 : x
  2. Step 2: Convert to fraction form
    1,197.70/1,790.24 = 1,080.39/x
  3. Step 3: Cross multiply
    1,197.70x = 1,790.24 × 1,080.39
  4. Step 4: Simplify right side
    1,197.70x = 1,934,148.63
  5. Step 5: Solve for x
    x = 1,934,148.63/1,197.70
  6. Step 6: Final answer
    x = 1,614.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.