Home / 2,750.12-4,123.28-1,289.69

Finding the Fourth Proportional to 2,750.12, 4,123.28 and 1,289.69

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Solution

The fourth proportional to 2,750.12, 4,123.28 and 1,289.69 is: 1,933.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.12 : 4,123.28 = 1,289.69 : x
  2. Step 2: Convert to fraction form
    2,750.12/4,123.28 = 1,289.69/x
  3. Step 3: Cross multiply
    2,750.12x = 4,123.28 × 1,289.69
  4. Step 4: Simplify right side
    2,750.12x = 5,317,725.92
  5. Step 5: Solve for x
    x = 5,317,725.92/2,750.12
  6. Step 6: Final answer
    x = 1,933.64

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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.