Home / 2,800.80-4,204.83-1,979.46

Finding the Fourth Proportional to 2,800.80, 4,204.83 and 1,979.46

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Solution

The fourth proportional to 2,800.80, 4,204.83 and 1,979.46 is: 2,971.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.80 : 4,204.83 = 1,979.46 : x
  2. Step 2: Convert to fraction form
    2,800.80/4,204.83 = 1,979.46/x
  3. Step 3: Cross multiply
    2,800.80x = 4,204.83 × 1,979.46
  4. Step 4: Simplify right side
    2,800.80x = 8,323,292.79
  5. Step 5: Solve for x
    x = 8,323,292.79/2,800.80
  6. Step 6: Final answer
    x = 2,971.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.