Home / 8,261.39-12,391.89-2,021.36

Finding the Fourth Proportional to 8,261.39, 12,391.89 and 2,021.36

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Solution

The fourth proportional to 8,261.39, 12,391.89 and 2,021.36 is: 3,031.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,261.39 : 12,391.89 = 2,021.36 : x
  2. Step 2: Convert to fraction form
    8,261.39/12,391.89 = 2,021.36/x
  3. Step 3: Cross multiply
    8,261.39x = 12,391.89 × 2,021.36
  4. Step 4: Simplify right side
    8,261.39x = 25,048,401.23
  5. Step 5: Solve for x
    x = 25,048,401.23/8,261.39
  6. Step 6: Final answer
    x = 3,031.98

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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.