Home / 4,969.20-6,857.64-2,979.84

Finding the Fourth Proportional to 4,969.20, 6,857.64 and 2,979.84

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Solution

The fourth proportional to 4,969.20, 6,857.64 and 2,979.84 is: 4,112.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.20 : 6,857.64 = 2,979.84 : x
  2. Step 2: Convert to fraction form
    4,969.20/6,857.64 = 2,979.84/x
  3. Step 3: Cross multiply
    4,969.20x = 6,857.64 × 2,979.84
  4. Step 4: Simplify right side
    4,969.20x = 20,434,669.98
  5. Step 5: Solve for x
    x = 20,434,669.98/4,969.20
  6. Step 6: Final answer
    x = 4,112.27

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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.