Home / 1,219.18-1,829.58-1,138.18

Finding the Fourth Proportional to 1,219.18, 1,829.58 and 1,138.18

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Solution

The fourth proportional to 1,219.18, 1,829.58 and 1,138.18 is: 1,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.18 : 1,829.58 = 1,138.18 : x
  2. Step 2: Convert to fraction form
    1,219.18/1,829.58 = 1,138.18/x
  3. Step 3: Cross multiply
    1,219.18x = 1,829.58 × 1,138.18
  4. Step 4: Simplify right side
    1,219.18x = 2,082,391.36
  5. Step 5: Solve for x
    x = 2,082,391.36/1,219.18
  6. Step 6: Final answer
    x = 1,708.03

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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.