Home / 2,981.06-4,111.94-1,918.46

Finding the Fourth Proportional to 2,981.06, 4,111.94 and 1,918.46

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Solution

The fourth proportional to 2,981.06, 4,111.94 and 1,918.46 is: 2,646.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.06 : 4,111.94 = 1,918.46 : x
  2. Step 2: Convert to fraction form
    2,981.06/4,111.94 = 1,918.46/x
  3. Step 3: Cross multiply
    2,981.06x = 4,111.94 × 1,918.46
  4. Step 4: Simplify right side
    2,981.06x = 7,888,592.41
  5. Step 5: Solve for x
    x = 7,888,592.41/2,981.06
  6. Step 6: Final answer
    x = 2,646.24

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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.