Home / 3,878.76-5,817.98-2,643.08

Finding the Fourth Proportional to 3,878.76, 5,817.98 and 2,643.08

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Solution

The fourth proportional to 3,878.76, 5,817.98 and 2,643.08 is: 3,964.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,878.76 : 5,817.98 = 2,643.08 : x
  2. Step 2: Convert to fraction form
    3,878.76/5,817.98 = 2,643.08/x
  3. Step 3: Cross multiply
    3,878.76x = 5,817.98 × 2,643.08
  4. Step 4: Simplify right side
    3,878.76x = 15,377,386.58
  5. Step 5: Solve for x
    x = 15,377,386.58/3,878.76
  6. Step 6: Final answer
    x = 3,964.51

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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.