Home / 2,391.87-3,591.45-1,983.63

Finding the Fourth Proportional to 2,391.87, 3,591.45 and 1,983.63

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Solution

The fourth proportional to 2,391.87, 3,591.45 and 1,983.63 is: 2,978.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.87 : 3,591.45 = 1,983.63 : x
  2. Step 2: Convert to fraction form
    2,391.87/3,591.45 = 1,983.63/x
  3. Step 3: Cross multiply
    2,391.87x = 3,591.45 × 1,983.63
  4. Step 4: Simplify right side
    2,391.87x = 7,124,107.96
  5. Step 5: Solve for x
    x = 7,124,107.96/2,391.87
  6. Step 6: Final answer
    x = 2,978.47

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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.