Home / 2,489.81-3,436.04-1,370.85

Finding the Fourth Proportional to 2,489.81, 3,436.04 and 1,370.85

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Solution

The fourth proportional to 2,489.81, 3,436.04 and 1,370.85 is: 1,891.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.81 : 3,436.04 = 1,370.85 : x
  2. Step 2: Convert to fraction form
    2,489.81/3,436.04 = 1,370.85/x
  3. Step 3: Cross multiply
    2,489.81x = 3,436.04 × 1,370.85
  4. Step 4: Simplify right side
    2,489.81x = 4,710,297.17
  5. Step 5: Solve for x
    x = 4,710,297.17/2,489.81
  6. Step 6: Final answer
    x = 1,891.83

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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.