Home / 2,279.63-3,146.34-1,284.92

Finding the Fourth Proportional to 2,279.63, 3,146.34 and 1,284.92

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Solution

The fourth proportional to 2,279.63, 3,146.34 and 1,284.92 is: 1,773.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.63 : 3,146.34 = 1,284.92 : x
  2. Step 2: Convert to fraction form
    2,279.63/3,146.34 = 1,284.92/x
  3. Step 3: Cross multiply
    2,279.63x = 3,146.34 × 1,284.92
  4. Step 4: Simplify right side
    2,279.63x = 4,042,779.46
  5. Step 5: Solve for x
    x = 4,042,779.46/2,279.63
  6. Step 6: Final answer
    x = 1,773.44

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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.