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Finding the Fourth Proportional to 3,362.80, 5,038.80 and 3,168.40

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Solution

The fourth proportional to 3,362.80, 5,038.80 and 3,168.40 is: 4,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,362.80 : 5,038.80 = 3,168.40 : x
  2. Step 2: Convert to fraction form
    3,362.80/5,038.80 = 3,168.40/x
  3. Step 3: Cross multiply
    3,362.80x = 5,038.80 × 3,168.40
  4. Step 4: Simplify right side
    3,362.80x = 15,964,933.92
  5. Step 5: Solve for x
    x = 15,964,933.92/3,362.80
  6. Step 6: Final answer
    x = 4,747.51

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1.5x scale

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.