Home / 4,986.84-6,879.60-2,889.84

Finding the Fourth Proportional to 4,986.84, 6,879.60 and 2,889.84

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Solution

The fourth proportional to 4,986.84, 6,879.60 and 2,889.84 is: 3,986.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.84 : 6,879.60 = 2,889.84 : x
  2. Step 2: Convert to fraction form
    4,986.84/6,879.60 = 2,889.84/x
  3. Step 3: Cross multiply
    4,986.84x = 6,879.60 × 2,889.84
  4. Step 4: Simplify right side
    4,986.84x = 19,880,943.26
  5. Step 5: Solve for x
    x = 19,880,943.26/4,986.84
  6. Step 6: Final answer
    x = 3,986.68

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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.