Home / 4,880.89-6,729.27-3,111.85

Finding the Fourth Proportional to 4,880.89, 6,729.27 and 3,111.85

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Solution

The fourth proportional to 4,880.89, 6,729.27 and 3,111.85 is: 4,290.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,880.89 : 6,729.27 = 3,111.85 : x
  2. Step 2: Convert to fraction form
    4,880.89/6,729.27 = 3,111.85/x
  3. Step 3: Cross multiply
    4,880.89x = 6,729.27 × 3,111.85
  4. Step 4: Simplify right side
    4,880.89x = 20,940,478.85
  5. Step 5: Solve for x
    x = 20,940,478.85/4,880.89
  6. Step 6: Final answer
    x = 4,290.30

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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.