Home / 2,818.97-3,890.81-1,772.45

Finding the Fourth Proportional to 2,818.97, 3,890.81 and 1,772.45

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Solution

The fourth proportional to 2,818.97, 3,890.81 and 1,772.45 is: 2,446.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,818.97 : 3,890.81 = 1,772.45 : x
  2. Step 2: Convert to fraction form
    2,818.97/3,890.81 = 1,772.45/x
  3. Step 3: Cross multiply
    2,818.97x = 3,890.81 × 1,772.45
  4. Step 4: Simplify right side
    2,818.97x = 6,896,257.32
  5. Step 5: Solve for x
    x = 6,896,257.32/2,818.97
  6. Step 6: Final answer
    x = 2,446.37

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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.