Home / 1,409.55-2,114.33-1,279.95

Finding the Fourth Proportional to 1,409.55, 2,114.33 and 1,279.95

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Solution

The fourth proportional to 1,409.55, 2,114.33 and 1,279.95 is: 1,919.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,409.55 : 2,114.33 = 1,279.95 : x
  2. Step 2: Convert to fraction form
    1,409.55/2,114.33 = 1,279.95/x
  3. Step 3: Cross multiply
    1,409.55x = 2,114.33 × 1,279.95
  4. Step 4: Simplify right side
    1,409.55x = 2,706,230.28
  5. Step 5: Solve for x
    x = 2,706,230.28/1,409.55
  6. Step 6: Final answer
    x = 1,919.93

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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.