Home / 2,600.40-3,899.96-1,212.42

Finding the Fourth Proportional to 2,600.40, 3,899.96 and 1,212.42

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Solution

The fourth proportional to 2,600.40, 3,899.96 and 1,212.42 is: 1,818.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.40 : 3,899.96 = 1,212.42 : x
  2. Step 2: Convert to fraction form
    2,600.40/3,899.96 = 1,212.42/x
  3. Step 3: Cross multiply
    2,600.40x = 3,899.96 × 1,212.42
  4. Step 4: Simplify right side
    2,600.40x = 4,728,389.50
  5. Step 5: Solve for x
    x = 4,728,389.50/2,600.40
  6. Step 6: Final answer
    x = 1,818.33

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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.