Home / 1,813.89-2,718.97-1,228.95

Finding the Fourth Proportional to 1,813.89, 2,718.97 and 1,228.95

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Solution

The fourth proportional to 1,813.89, 2,718.97 and 1,228.95 is: 1,842.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.89 : 2,718.97 = 1,228.95 : x
  2. Step 2: Convert to fraction form
    1,813.89/2,718.97 = 1,228.95/x
  3. Step 3: Cross multiply
    1,813.89x = 2,718.97 × 1,228.95
  4. Step 4: Simplify right side
    1,813.89x = 3,341,478.18
  5. Step 5: Solve for x
    x = 3,341,478.18/1,813.89
  6. Step 6: Final answer
    x = 1,842.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.