Home / 4,985.57-6,879.83-2,747.39

Finding the Fourth Proportional to 4,985.57, 6,879.83 and 2,747.39

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Solution

The fourth proportional to 4,985.57, 6,879.83 and 2,747.39 is: 3,791.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.57 : 6,879.83 = 2,747.39 : x
  2. Step 2: Convert to fraction form
    4,985.57/6,879.83 = 2,747.39/x
  3. Step 3: Cross multiply
    4,985.57x = 6,879.83 × 2,747.39
  4. Step 4: Simplify right side
    4,985.57x = 18,901,528.01
  5. Step 5: Solve for x
    x = 18,901,528.01/4,985.57
  6. Step 6: Final answer
    x = 3,791.25

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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.