Home / 2,279.21-3,145.26-1,270.93

Finding the Fourth Proportional to 2,279.21, 3,145.26 and 1,270.93

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Solution

The fourth proportional to 2,279.21, 3,145.26 and 1,270.93 is: 1,753.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,279.21 : 3,145.26 = 1,270.93 : x
  2. Step 2: Convert to fraction form
    2,279.21/3,145.26 = 1,270.93/x
  3. Step 3: Cross multiply
    2,279.21x = 3,145.26 × 1,270.93
  4. Step 4: Simplify right side
    2,279.21x = 3,997,405.29
  5. Step 5: Solve for x
    x = 3,997,405.29/2,279.21
  6. Step 6: Final answer
    x = 1,753.86

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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.