Home / 1,283.85-1,771.52-1,107.05

Finding the Fourth Proportional to 1,283.85, 1,771.52 and 1,107.05

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Solution

The fourth proportional to 1,283.85, 1,771.52 and 1,107.05 is: 1,527.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.85 : 1,771.52 = 1,107.05 : x
  2. Step 2: Convert to fraction form
    1,283.85/1,771.52 = 1,107.05/x
  3. Step 3: Cross multiply
    1,283.85x = 1,771.52 × 1,107.05
  4. Step 4: Simplify right side
    1,283.85x = 1,961,146.82
  5. Step 5: Solve for x
    x = 1,961,146.82/1,283.85
  6. Step 6: Final answer
    x = 1,527.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.