Home / 4,985.85-6,880.43-2,747.72

Finding the Fourth Proportional to 4,985.85, 6,880.43 and 2,747.72

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Solution

The fourth proportional to 4,985.85, 6,880.43 and 2,747.72 is: 3,791.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.85 : 6,880.43 = 2,747.72 : x
  2. Step 2: Convert to fraction form
    4,985.85/6,880.43 = 2,747.72/x
  3. Step 3: Cross multiply
    4,985.85x = 6,880.43 × 2,747.72
  4. Step 4: Simplify right side
    4,985.85x = 18,905,519.19
  5. Step 5: Solve for x
    x = 18,905,519.19/4,985.85
  6. Step 6: Final answer
    x = 3,791.84

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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.