Home / 1,299.80-1,941.39-1,176.20

Finding the Fourth Proportional to 1,299.80, 1,941.39 and 1,176.20

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Solution

The fourth proportional to 1,299.80, 1,941.39 and 1,176.20 is: 1,756.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,299.80 : 1,941.39 = 1,176.20 : x
  2. Step 2: Convert to fraction form
    1,299.80/1,941.39 = 1,176.20/x
  3. Step 3: Cross multiply
    1,299.80x = 1,941.39 × 1,176.20
  4. Step 4: Simplify right side
    1,299.80x = 2,283,474.72
  5. Step 5: Solve for x
    x = 2,283,474.72/1,299.80
  6. Step 6: Final answer
    x = 1,756.79

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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.