Home / 2,911.85-4,366.69-1,245.77

Finding the Fourth Proportional to 2,911.85, 4,366.69 and 1,245.77

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Solution

The fourth proportional to 2,911.85, 4,366.69 and 1,245.77 is: 1,868.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.85 : 4,366.69 = 1,245.77 : x
  2. Step 2: Convert to fraction form
    2,911.85/4,366.69 = 1,245.77/x
  3. Step 3: Cross multiply
    2,911.85x = 4,366.69 × 1,245.77
  4. Step 4: Simplify right side
    2,911.85x = 5,439,891.40
  5. Step 5: Solve for x
    x = 5,439,891.40/2,911.85
  6. Step 6: Final answer
    x = 1,868.19

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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.