Home / 4,976.81-6,865.39-3,087.79

Finding the Fourth Proportional to 4,976.81, 6,865.39 and 3,087.79

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Solution

The fourth proportional to 4,976.81, 6,865.39 and 3,087.79 is: 4,259.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,976.81 : 6,865.39 = 3,087.79 : x
  2. Step 2: Convert to fraction form
    4,976.81/6,865.39 = 3,087.79/x
  3. Step 3: Cross multiply
    4,976.81x = 6,865.39 × 3,087.79
  4. Step 4: Simplify right side
    4,976.81x = 21,198,869.28
  5. Step 5: Solve for x
    x = 21,198,869.28/4,976.81
  6. Step 6: Final answer
    x = 4,259.53

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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.