Home / 3,977.64-5,491.62-2,561.90

Finding the Fourth Proportional to 3,977.64, 5,491.62 and 2,561.90

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Solution

The fourth proportional to 3,977.64, 5,491.62 and 2,561.90 is: 3,537.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.64 : 5,491.62 = 2,561.90 : x
  2. Step 2: Convert to fraction form
    3,977.64/5,491.62 = 2,561.90/x
  3. Step 3: Cross multiply
    3,977.64x = 5,491.62 × 2,561.90
  4. Step 4: Simplify right side
    3,977.64x = 14,068,953.82
  5. Step 5: Solve for x
    x = 14,068,953.82/3,977.64
  6. Step 6: Final answer
    x = 3,537.01

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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.