Home / 2,279.61-3,145.88-1,335.94

Finding the Fourth Proportional to 2,279.61, 3,145.88 and 1,335.94

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Solution

The fourth proportional to 2,279.61, 3,145.88 and 1,335.94 is: 1,843.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.61 : 3,145.88 = 1,335.94 : x
  2. Step 2: Convert to fraction form
    2,279.61/3,145.88 = 1,335.94/x
  3. Step 3: Cross multiply
    2,279.61x = 3,145.88 × 1,335.94
  4. Step 4: Simplify right side
    2,279.61x = 4,202,702.40
  5. Step 5: Solve for x
    x = 4,202,702.40/2,279.61
  6. Step 6: Final answer
    x = 1,843.61

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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.