Home / 1,980.45-2,726.97-1,730.31

Finding the Fourth Proportional to 1,980.45, 2,726.97 and 1,730.31

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Solution

The fourth proportional to 1,980.45, 2,726.97 and 1,730.31 is: 2,382.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.45 : 2,726.97 = 1,730.31 : x
  2. Step 2: Convert to fraction form
    1,980.45/2,726.97 = 1,730.31/x
  3. Step 3: Cross multiply
    1,980.45x = 2,726.97 × 1,730.31
  4. Step 4: Simplify right side
    1,980.45x = 4,718,503.46
  5. Step 5: Solve for x
    x = 4,718,503.46/1,980.45
  6. Step 6: Final answer
    x = 2,382.54

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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.