Home / 2,223.90-3,068.86-1,279.54

Finding the Fourth Proportional to 2,223.90, 3,068.86 and 1,279.54

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Solution

The fourth proportional to 2,223.90, 3,068.86 and 1,279.54 is: 1,765.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,223.90 : 3,068.86 = 1,279.54 : x
  2. Step 2: Convert to fraction form
    2,223.90/3,068.86 = 1,279.54/x
  3. Step 3: Cross multiply
    2,223.90x = 3,068.86 × 1,279.54
  4. Step 4: Simplify right side
    2,223.90x = 3,926,729.12
  5. Step 5: Solve for x
    x = 3,926,729.12/2,223.90
  6. Step 6: Final answer
    x = 1,765.70

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1.5x scale

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.