Home / 1,831.35-2,748.45-1,279.95

Finding the Fourth Proportional to 1,831.35, 2,748.45 and 1,279.95

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Solution

The fourth proportional to 1,831.35, 2,748.45 and 1,279.95 is: 1,920.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,831.35 : 2,748.45 = 1,279.95 : x
  2. Step 2: Convert to fraction form
    1,831.35/2,748.45 = 1,279.95/x
  3. Step 3: Cross multiply
    1,831.35x = 2,748.45 × 1,279.95
  4. Step 4: Simplify right side
    1,831.35x = 3,517,878.58
  5. Step 5: Solve for x
    x = 3,517,878.58/1,831.35
  6. Step 6: Final answer
    x = 1,920.92

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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.