Home / 4,969.50-6,857.66-2,979.68

Finding the Fourth Proportional to 4,969.50, 6,857.66 and 2,979.68

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Solution

The fourth proportional to 4,969.50, 6,857.66 and 2,979.68 is: 4,111.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,969.50 : 6,857.66 = 2,979.68 : x
  2. Step 2: Convert to fraction form
    4,969.50/6,857.66 = 2,979.68/x
  3. Step 3: Cross multiply
    4,969.50x = 6,857.66 × 2,979.68
  4. Step 4: Simplify right side
    4,969.50x = 20,433,583.16
  5. Step 5: Solve for x
    x = 20,433,583.16/4,969.50
  6. Step 6: Final answer
    x = 4,111.80

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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.