Home / 1,242.14-1,851.30-1,190.21

Finding the Fourth Proportional to 1,242.14, 1,851.30 and 1,190.21

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Solution

The fourth proportional to 1,242.14, 1,851.30 and 1,190.21 is: 1,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242.14 : 1,851.30 = 1,190.21 : x
  2. Step 2: Convert to fraction form
    1,242.14/1,851.30 = 1,190.21/x
  3. Step 3: Cross multiply
    1,242.14x = 1,851.30 × 1,190.21
  4. Step 4: Simplify right side
    1,242.14x = 2,203,435.77
  5. Step 5: Solve for x
    x = 2,203,435.77/1,242.14
  6. Step 6: Final answer
    x = 1,773.90

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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.