Home / 3,623.74-5,000.78-2,131.72

Finding the Fourth Proportional to 3,623.74, 5,000.78 and 2,131.72

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Solution

The fourth proportional to 3,623.74, 5,000.78 and 2,131.72 is: 2,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,623.74 : 5,000.78 = 2,131.72 : x
  2. Step 2: Convert to fraction form
    3,623.74/5,000.78 = 2,131.72/x
  3. Step 3: Cross multiply
    3,623.74x = 5,000.78 × 2,131.72
  4. Step 4: Simplify right side
    3,623.74x = 10,660,262.74
  5. Step 5: Solve for x
    x = 10,660,262.74/3,623.74
  6. Step 6: Final answer
    x = 2,941.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.