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Finding the Fourth Proportional to 4,742.82, 7,114.01 and 1,455.95

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Solution

The fourth proportional to 4,742.82, 7,114.01 and 1,455.95 is: 2,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.82 : 7,114.01 = 1,455.95 : x
  2. Step 2: Convert to fraction form
    4,742.82/7,114.01 = 1,455.95/x
  3. Step 3: Cross multiply
    4,742.82x = 7,114.01 × 1,455.95
  4. Step 4: Simplify right side
    4,742.82x = 10,357,600.01
  5. Step 5: Solve for x
    x = 10,357,600.01/4,742.82
  6. Step 6: Final answer
    x = 2,183.85

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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.