Home / 5,412.78-8,122.80-3,514.92

Finding the Fourth Proportional to 5,412.78, 8,122.80 and 3,514.92

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Solution

The fourth proportional to 5,412.78, 8,122.80 and 3,514.92 is: 5,274.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,412.78 : 8,122.80 = 3,514.92 : x
  2. Step 2: Convert to fraction form
    5,412.78/8,122.80 = 3,514.92/x
  3. Step 3: Cross multiply
    5,412.78x = 8,122.80 × 3,514.92
  4. Step 4: Simplify right side
    5,412.78x = 28,550,992.18
  5. Step 5: Solve for x
    x = 28,550,992.18/5,412.78
  6. Step 6: Final answer
    x = 5,274.74

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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.