Home / 3,776.76-5,663.79-2,087.78

Finding the Fourth Proportional to 3,776.76, 5,663.79 and 2,087.78

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Solution

The fourth proportional to 3,776.76, 5,663.79 and 2,087.78 is: 3,130.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,776.76 : 5,663.79 = 2,087.78 : x
  2. Step 2: Convert to fraction form
    3,776.76/5,663.79 = 2,087.78/x
  3. Step 3: Cross multiply
    3,776.76x = 5,663.79 × 2,087.78
  4. Step 4: Simplify right side
    3,776.76x = 11,824,719.17
  5. Step 5: Solve for x
    x = 11,824,719.17/3,776.76
  6. Step 6: Final answer
    x = 3,130.92

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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.