Home / 1,241.28-1,871.01-1,137.38

Finding the Fourth Proportional to 1,241.28, 1,871.01 and 1,137.38

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Solution

The fourth proportional to 1,241.28, 1,871.01 and 1,137.38 is: 1,714.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.28 : 1,871.01 = 1,137.38 : x
  2. Step 2: Convert to fraction form
    1,241.28/1,871.01 = 1,137.38/x
  3. Step 3: Cross multiply
    1,241.28x = 1,871.01 × 1,137.38
  4. Step 4: Simplify right side
    1,241.28x = 2,128,040.00
  5. Step 5: Solve for x
    x = 2,128,040.00/1,241.28
  6. Step 6: Final answer
    x = 1,714.39

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.