Home / 3,630.21-5,438.47-2,145.00

Finding the Fourth Proportional to 3,630.21, 5,438.47 and 2,145.00

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Solution

The fourth proportional to 3,630.21, 5,438.47 and 2,145.00 is: 3,213.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.21 : 5,438.47 = 2,145.00 : x
  2. Step 2: Convert to fraction form
    3,630.21/5,438.47 = 2,145.00/x
  3. Step 3: Cross multiply
    3,630.21x = 5,438.47 × 2,145.00
  4. Step 4: Simplify right side
    3,630.21x = 11,665,526.38
  5. Step 5: Solve for x
    x = 11,665,526.38/3,630.21
  6. Step 6: Final answer
    x = 3,213.46

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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.