Home / 3,977.76-5,491.29-2,486.51

Finding the Fourth Proportional to 3,977.76, 5,491.29 and 2,486.51

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Solution

The fourth proportional to 3,977.76, 5,491.29 and 2,486.51 is: 3,432.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.76 : 5,491.29 = 2,486.51 : x
  2. Step 2: Convert to fraction form
    3,977.76/5,491.29 = 2,486.51/x
  3. Step 3: Cross multiply
    3,977.76x = 5,491.29 × 2,486.51
  4. Step 4: Simplify right side
    3,977.76x = 13,654,120.04
  5. Step 5: Solve for x
    x = 13,654,120.04/3,977.76
  6. Step 6: Final answer
    x = 3,432.62

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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.