Home / 1,920.41-2,650.30-1,081.19

Finding the Fourth Proportional to 1,920.41, 2,650.30 and 1,081.19

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Solution

The fourth proportional to 1,920.41, 2,650.30 and 1,081.19 is: 1,492.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,920.41 : 2,650.30 = 1,081.19 : x
  2. Step 2: Convert to fraction form
    1,920.41/2,650.30 = 1,081.19/x
  3. Step 3: Cross multiply
    1,920.41x = 2,650.30 × 1,081.19
  4. Step 4: Simplify right side
    1,920.41x = 2,865,468.53
  5. Step 5: Solve for x
    x = 2,865,468.53/1,920.41
  6. Step 6: Final answer
    x = 1,492.11

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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.