Home / 3,514.90-5,276.40-2,129.80

Finding the Fourth Proportional to 3,514.90, 5,276.40 and 2,129.80

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Solution

The fourth proportional to 3,514.90, 5,276.40 and 2,129.80 is: 3,197.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,514.90 : 5,276.40 = 2,129.80 : x
  2. Step 2: Convert to fraction form
    3,514.90/5,276.40 = 2,129.80/x
  3. Step 3: Cross multiply
    3,514.90x = 5,276.40 × 2,129.80
  4. Step 4: Simplify right side
    3,514.90x = 11,237,676.72
  5. Step 5: Solve for x
    x = 11,237,676.72/3,514.90
  6. Step 6: Final answer
    x = 3,197.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.