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Finding the Fourth Proportional to 3,771.84, 5,203.72 and 2,779.49

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Solution

The fourth proportional to 3,771.84, 5,203.72 and 2,779.49 is: 3,834.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,771.84 : 5,203.72 = 2,779.49 : x
  2. Step 2: Convert to fraction form
    3,771.84/5,203.72 = 2,779.49/x
  3. Step 3: Cross multiply
    3,771.84x = 5,203.72 × 2,779.49
  4. Step 4: Simplify right side
    3,771.84x = 14,463,687.70
  5. Step 5: Solve for x
    x = 14,463,687.70/3,771.84
  6. Step 6: Final answer
    x = 3,834.65

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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.