Home / 1,283.09-1,921.80-1,181.93

Finding the Fourth Proportional to 1,283.09, 1,921.80 and 1,181.93

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Solution

The fourth proportional to 1,283.09, 1,921.80 and 1,181.93 is: 1,770.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,283.09 : 1,921.80 = 1,181.93 : x
  2. Step 2: Convert to fraction form
    1,283.09/1,921.80 = 1,181.93/x
  3. Step 3: Cross multiply
    1,283.09x = 1,921.80 × 1,181.93
  4. Step 4: Simplify right side
    1,283.09x = 2,271,433.07
  5. Step 5: Solve for x
    x = 2,271,433.07/1,283.09
  6. Step 6: Final answer
    x = 1,770.28

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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.