Home / 3,878.92-5,818.74-1,282.06

Finding the Fourth Proportional to 3,878.92, 5,818.74 and 1,282.06

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Solution

The fourth proportional to 3,878.92, 5,818.74 and 1,282.06 is: 1,923.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.92 : 5,818.74 = 1,282.06 : x
  2. Step 2: Convert to fraction form
    3,878.92/5,818.74 = 1,282.06/x
  3. Step 3: Cross multiply
    3,878.92x = 5,818.74 × 1,282.06
  4. Step 4: Simplify right side
    3,878.92x = 7,459,973.80
  5. Step 5: Solve for x
    x = 7,459,973.80/3,878.92
  6. Step 6: Final answer
    x = 1,923.21

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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.