Home / 1,939.88-2,676.64-1,154.12

Finding the Fourth Proportional to 1,939.88, 2,676.64 and 1,154.12

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Solution

The fourth proportional to 1,939.88, 2,676.64 and 1,154.12 is: 1,592.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.88 : 2,676.64 = 1,154.12 : x
  2. Step 2: Convert to fraction form
    1,939.88/2,676.64 = 1,154.12/x
  3. Step 3: Cross multiply
    1,939.88x = 2,676.64 × 1,154.12
  4. Step 4: Simplify right side
    1,939.88x = 3,089,163.76
  5. Step 5: Solve for x
    x = 3,089,163.76/1,939.88
  6. Step 6: Final answer
    x = 1,592.45

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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.