Home / 2,981.73-4,112.13-2,561.95

Finding the Fourth Proportional to 2,981.73, 4,112.13 and 2,561.95

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Solution

The fourth proportional to 2,981.73, 4,112.13 and 2,561.95 is: 3,533.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.73 : 4,112.13 = 2,561.95 : x
  2. Step 2: Convert to fraction form
    2,981.73/4,112.13 = 2,561.95/x
  3. Step 3: Cross multiply
    2,981.73x = 4,112.13 × 2,561.95
  4. Step 4: Simplify right side
    2,981.73x = 10,535,071.45
  5. Step 5: Solve for x
    x = 10,535,071.45/2,981.73
  6. Step 6: Final answer
    x = 3,533.21

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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.