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Finding the Fourth Proportional to 4,687.76, 7,026.75 and 2,219.64

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Solution

The fourth proportional to 4,687.76, 7,026.75 and 2,219.64 is: 3,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,687.76 : 7,026.75 = 2,219.64 : x
  2. Step 2: Convert to fraction form
    4,687.76/7,026.75 = 2,219.64/x
  3. Step 3: Cross multiply
    4,687.76x = 7,026.75 × 2,219.64
  4. Step 4: Simplify right side
    4,687.76x = 15,596,855.37
  5. Step 5: Solve for x
    x = 15,596,855.37/4,687.76
  6. Step 6: Final answer
    x = 3,327.15

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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.