Home / 6,912.08-10,354.40-3,209.20

Finding the Fourth Proportional to 6,912.08, 10,354.40 and 3,209.20

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Solution

The fourth proportional to 6,912.08, 10,354.40 and 3,209.20 is: 4,807.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,912.08 : 10,354.40 = 3,209.20 : x
  2. Step 2: Convert to fraction form
    6,912.08/10,354.40 = 3,209.20/x
  3. Step 3: Cross multiply
    6,912.08x = 10,354.40 × 3,209.20
  4. Step 4: Simplify right side
    6,912.08x = 33,229,340.48
  5. Step 5: Solve for x
    x = 33,229,340.48/6,912.08
  6. Step 6: Final answer
    x = 4,807.43

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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.