Home / 3,021.40-4,169.70-1,901.92

Finding the Fourth Proportional to 3,021.40, 4,169.70 and 1,901.92

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Solution

The fourth proportional to 3,021.40, 4,169.70 and 1,901.92 is: 2,624.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.40 : 4,169.70 = 1,901.92 : x
  2. Step 2: Convert to fraction form
    3,021.40/4,169.70 = 1,901.92/x
  3. Step 3: Cross multiply
    3,021.40x = 4,169.70 × 1,901.92
  4. Step 4: Simplify right side
    3,021.40x = 7,930,435.82
  5. Step 5: Solve for x
    x = 7,930,435.82/3,021.40
  6. Step 6: Final answer
    x = 2,624.76

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1.5x scale

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.