Home / 4,129.40-6,198.90-2,487.80

Finding the Fourth Proportional to 4,129.40, 6,198.90 and 2,487.80

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Solution

The fourth proportional to 4,129.40, 6,198.90 and 2,487.80 is: 3,734.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,129.40 : 6,198.90 = 2,487.80 : x
  2. Step 2: Convert to fraction form
    4,129.40/6,198.90 = 2,487.80/x
  3. Step 3: Cross multiply
    4,129.40x = 6,198.90 × 2,487.80
  4. Step 4: Simplify right side
    4,129.40x = 15,421,623.42
  5. Step 5: Solve for x
    x = 15,421,623.42/4,129.40
  6. Step 6: Final answer
    x = 3,734.59

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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.