Home / 3,638.86-5,021.58-2,146.84

Finding the Fourth Proportional to 3,638.86, 5,021.58 and 2,146.84

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Solution

The fourth proportional to 3,638.86, 5,021.58 and 2,146.84 is: 2,962.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,638.86 : 5,021.58 = 2,146.84 : x
  2. Step 2: Convert to fraction form
    3,638.86/5,021.58 = 2,146.84/x
  3. Step 3: Cross multiply
    3,638.86x = 5,021.58 × 2,146.84
  4. Step 4: Simplify right side
    3,638.86x = 10,780,528.81
  5. Step 5: Solve for x
    x = 10,780,528.81/3,638.86
  6. Step 6: Final answer
    x = 2,962.61

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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.