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Finding the Fourth Proportional to 4,817.76, 7,220.71 and 2,739.50

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Solution

The fourth proportional to 4,817.76, 7,220.71 and 2,739.50 is: 4,105.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,817.76 : 7,220.71 = 2,739.50 : x
  2. Step 2: Convert to fraction form
    4,817.76/7,220.71 = 2,739.50/x
  3. Step 3: Cross multiply
    4,817.76x = 7,220.71 × 2,739.50
  4. Step 4: Simplify right side
    4,817.76x = 19,781,135.05
  5. Step 5: Solve for x
    x = 19,781,135.05/4,817.76
  6. Step 6: Final answer
    x = 4,105.88

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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.