Home / 12,578.04-18,863.40-3,813

Finding the Fourth Proportional to 12,578.04, 18,863.40 and 3,813

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Solution

The fourth proportional to 12,578.04, 18,863.40 and 3,813 is: 5,718.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.04 : 18,863.40 = 3,813 : x
  2. Step 2: Convert to fraction form
    12,578.04/18,863.40 = 3,813/x
  3. Step 3: Cross multiply
    12,578.04x = 18,863.40 × 3,813
  4. Step 4: Simplify right side
    12,578.04x = 71,926,144.20
  5. Step 5: Solve for x
    x = 71,926,144.20/12,578.04
  6. Step 6: Final answer
    x = 5,718.39

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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.