Home / 2,279.03-3,145.14-1,383.05

Finding the Fourth Proportional to 2,279.03, 3,145.14 and 1,383.05

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Solution

The fourth proportional to 2,279.03, 3,145.14 and 1,383.05 is: 1,908.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.03 : 3,145.14 = 1,383.05 : x
  2. Step 2: Convert to fraction form
    2,279.03/3,145.14 = 1,383.05/x
  3. Step 3: Cross multiply
    2,279.03x = 3,145.14 × 1,383.05
  4. Step 4: Simplify right side
    2,279.03x = 4,349,893.74
  5. Step 5: Solve for x
    x = 4,349,893.74/2,279.03
  6. Step 6: Final answer
    x = 1,908.66

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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.