Home / 4,979.07-6,868.80-3,185.70

Finding the Fourth Proportional to 4,979.07, 6,868.80 and 3,185.70

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Solution

The fourth proportional to 4,979.07, 6,868.80 and 3,185.70 is: 4,394.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,979.07 : 6,868.80 = 3,185.70 : x
  2. Step 2: Convert to fraction form
    4,979.07/6,868.80 = 3,185.70/x
  3. Step 3: Cross multiply
    4,979.07x = 6,868.80 × 3,185.70
  4. Step 4: Simplify right side
    4,979.07x = 21,881,936.16
  5. Step 5: Solve for x
    x = 21,881,936.16/4,979.07
  6. Step 6: Final answer
    x = 4,394.78

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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.