Home / 3,776.88-5,669.56-2,218.72

Finding the Fourth Proportional to 3,776.88, 5,669.56 and 2,218.72

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Solution

The fourth proportional to 3,776.88, 5,669.56 and 2,218.72 is: 3,330.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,776.88 : 5,669.56 = 2,218.72 : x
  2. Step 2: Convert to fraction form
    3,776.88/5,669.56 = 2,218.72/x
  3. Step 3: Cross multiply
    3,776.88x = 5,669.56 × 2,218.72
  4. Step 4: Simplify right side
    3,776.88x = 12,579,166.16
  5. Step 5: Solve for x
    x = 12,579,166.16/3,776.88
  6. Step 6: Final answer
    x = 3,330.57

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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.