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Finding the Fourth Proportional to 4,813.55, 7,221.30 and 2,734.55

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Solution

The fourth proportional to 4,813.55, 7,221.30 and 2,734.55 is: 4,102.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,813.55 : 7,221.30 = 2,734.55 : x
  2. Step 2: Convert to fraction form
    4,813.55/7,221.30 = 2,734.55/x
  3. Step 3: Cross multiply
    4,813.55x = 7,221.30 × 2,734.55
  4. Step 4: Simplify right side
    4,813.55x = 19,747,005.92
  5. Step 5: Solve for x
    x = 19,747,005.92/4,813.55
  6. Step 6: Final answer
    x = 4,102.38

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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.