Home / 3,870.80-5,338.80-2,736

Finding the Fourth Proportional to 3,870.80, 5,338.80 and 2,736

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Solution

The fourth proportional to 3,870.80, 5,338.80 and 2,736 is: 3,773.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,870.80 : 5,338.80 = 2,736 : x
  2. Step 2: Convert to fraction form
    3,870.80/5,338.80 = 2,736/x
  3. Step 3: Cross multiply
    3,870.80x = 5,338.80 × 2,736
  4. Step 4: Simplify right side
    3,870.80x = 14,606,956.80
  5. Step 5: Solve for x
    x = 14,606,956.80/3,870.80
  6. Step 6: Final answer
    x = 3,773.63

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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.