Home / 2,455.91-3,687.56-2,112.98

Finding the Fourth Proportional to 2,455.91, 3,687.56 and 2,112.98

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Solution

The fourth proportional to 2,455.91, 3,687.56 and 2,112.98 is: 3,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.91 : 3,687.56 = 2,112.98 : x
  2. Step 2: Convert to fraction form
    2,455.91/3,687.56 = 2,112.98/x
  3. Step 3: Cross multiply
    2,455.91x = 3,687.56 × 2,112.98
  4. Step 4: Simplify right side
    2,455.91x = 7,791,711.53
  5. Step 5: Solve for x
    x = 7,791,711.53/2,455.91
  6. Step 6: Final answer
    x = 3,172.64

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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.