Home / 2,910.45-4,017.79-1,863.12

Finding the Fourth Proportional to 2,910.45, 4,017.79 and 1,863.12

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Solution

The fourth proportional to 2,910.45, 4,017.79 and 1,863.12 is: 2,571.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.45 : 4,017.79 = 1,863.12 : x
  2. Step 2: Convert to fraction form
    2,910.45/4,017.79 = 1,863.12/x
  3. Step 3: Cross multiply
    2,910.45x = 4,017.79 × 1,863.12
  4. Step 4: Simplify right side
    2,910.45x = 7,485,624.90
  5. Step 5: Solve for x
    x = 7,485,624.90/2,910.45
  6. Step 6: Final answer
    x = 2,571.98

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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.