Home / 2,886.11-3,981.44-1,890.95

Finding the Fourth Proportional to 2,886.11, 3,981.44 and 1,890.95

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Solution

The fourth proportional to 2,886.11, 3,981.44 and 1,890.95 is: 2,608.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,886.11 : 3,981.44 = 1,890.95 : x
  2. Step 2: Convert to fraction form
    2,886.11/3,981.44 = 1,890.95/x
  3. Step 3: Cross multiply
    2,886.11x = 3,981.44 × 1,890.95
  4. Step 4: Simplify right side
    2,886.11x = 7,528,674.61
  5. Step 5: Solve for x
    x = 7,528,674.61/2,886.11
  6. Step 6: Final answer
    x = 2,608.59

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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.