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Finding the Fourth Proportional to 6,361.81, 8,779.43 and 3,529.09

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Solution

The fourth proportional to 6,361.81, 8,779.43 and 3,529.09 is: 4,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,361.81 : 8,779.43 = 3,529.09 : x
  2. Step 2: Convert to fraction form
    6,361.81/8,779.43 = 3,529.09/x
  3. Step 3: Cross multiply
    6,361.81x = 8,779.43 × 3,529.09
  4. Step 4: Simplify right side
    6,361.81x = 30,983,354.72
  5. Step 5: Solve for x
    x = 30,983,354.72/6,361.81
  6. Step 6: Final answer
    x = 4,870.21

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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.