Home / 1,917.20-2,647-1,474.32

Finding the Fourth Proportional to 1,917.20, 2,647 and 1,474.32

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Solution

The fourth proportional to 1,917.20, 2,647 and 1,474.32 is: 2,035.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.20 : 2,647 = 1,474.32 : x
  2. Step 2: Convert to fraction form
    1,917.20/2,647 = 1,474.32/x
  3. Step 3: Cross multiply
    1,917.20x = 2,647 × 1,474.32
  4. Step 4: Simplify right side
    1,917.20x = 3,902,525.04
  5. Step 5: Solve for x
    x = 3,902,525.04/1,917.20
  6. Step 6: Final answer
    x = 2,035.53

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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.