Home / 2,981.25-4,113.45-1,802.09

Finding the Fourth Proportional to 2,981.25, 4,113.45 and 1,802.09

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Solution

The fourth proportional to 2,981.25, 4,113.45 and 1,802.09 is: 2,486.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.25 : 4,113.45 = 1,802.09 : x
  2. Step 2: Convert to fraction form
    2,981.25/4,113.45 = 1,802.09/x
  3. Step 3: Cross multiply
    2,981.25x = 4,113.45 × 1,802.09
  4. Step 4: Simplify right side
    2,981.25x = 7,412,786.54
  5. Step 5: Solve for x
    x = 7,412,786.54/2,981.25
  6. Step 6: Final answer
    x = 2,486.47

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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.