Home / 3,810.85-5,714.90-2,638.07

Finding the Fourth Proportional to 3,810.85, 5,714.90 and 2,638.07

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Solution

The fourth proportional to 3,810.85, 5,714.90 and 2,638.07 is: 3,956.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,810.85 : 5,714.90 = 2,638.07 : x
  2. Step 2: Convert to fraction form
    3,810.85/5,714.90 = 2,638.07/x
  3. Step 3: Cross multiply
    3,810.85x = 5,714.90 × 2,638.07
  4. Step 4: Simplify right side
    3,810.85x = 15,076,310.64
  5. Step 5: Solve for x
    x = 15,076,310.64/3,810.85
  6. Step 6: Final answer
    x = 3,956.16

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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.