Home / 2,289.84-3,159.72-1,939.92

Finding the Fourth Proportional to 2,289.84, 3,159.72 and 1,939.92

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Solution

The fourth proportional to 2,289.84, 3,159.72 and 1,939.92 is: 2,676.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.84 : 3,159.72 = 1,939.92 : x
  2. Step 2: Convert to fraction form
    2,289.84/3,159.72 = 1,939.92/x
  3. Step 3: Cross multiply
    2,289.84x = 3,159.72 × 1,939.92
  4. Step 4: Simplify right side
    2,289.84x = 6,129,604.02
  5. Step 5: Solve for x
    x = 6,129,604.02/2,289.84
  6. Step 6: Final answer
    x = 2,676.87

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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.