Home / 2,917.10-4,023.11-1,972.64

Finding the Fourth Proportional to 2,917.10, 4,023.11 and 1,972.64

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Solution

The fourth proportional to 2,917.10, 4,023.11 and 1,972.64 is: 2,720.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.10 : 4,023.11 = 1,972.64 : x
  2. Step 2: Convert to fraction form
    2,917.10/4,023.11 = 1,972.64/x
  3. Step 3: Cross multiply
    2,917.10x = 4,023.11 × 1,972.64
  4. Step 4: Simplify right side
    2,917.10x = 7,936,117.73
  5. Step 5: Solve for x
    x = 7,936,117.73/2,917.10
  6. Step 6: Final answer
    x = 2,720.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.