Home / 6,438.38-8,885.09-3,643.88

Finding the Fourth Proportional to 6,438.38, 8,885.09 and 3,643.88

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Solution

The fourth proportional to 6,438.38, 8,885.09 and 3,643.88 is: 5,028.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.38 : 8,885.09 = 3,643.88 : x
  2. Step 2: Convert to fraction form
    6,438.38/8,885.09 = 3,643.88/x
  3. Step 3: Cross multiply
    6,438.38x = 8,885.09 × 3,643.88
  4. Step 4: Simplify right side
    6,438.38x = 32,376,166.43
  5. Step 5: Solve for x
    x = 32,376,166.43/6,438.38
  6. Step 6: Final answer
    x = 5,028.62

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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.