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Finding the Fourth Proportional to 2,653.70, 3,981.23 and 2,486.94

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Solution

The fourth proportional to 2,653.70, 3,981.23 and 2,486.94 is: 3,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,653.70 : 3,981.23 = 2,486.94 : x
  2. Step 2: Convert to fraction form
    2,653.70/3,981.23 = 2,486.94/x
  3. Step 3: Cross multiply
    2,653.70x = 3,981.23 × 2,486.94
  4. Step 4: Simplify right side
    2,653.70x = 9,901,080.14
  5. Step 5: Solve for x
    x = 9,901,080.14/2,653.70
  6. Step 6: Final answer
    x = 3,731.05

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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.