Home / 3,578.12-5,356.94-2,421.80

Finding the Fourth Proportional to 3,578.12, 5,356.94 and 2,421.80

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Solution

The fourth proportional to 3,578.12, 5,356.94 and 2,421.80 is: 3,625.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,578.12 : 5,356.94 = 2,421.80 : x
  2. Step 2: Convert to fraction form
    3,578.12/5,356.94 = 2,421.80/x
  3. Step 3: Cross multiply
    3,578.12x = 5,356.94 × 2,421.80
  4. Step 4: Simplify right side
    3,578.12x = 12,973,437.29
  5. Step 5: Solve for x
    x = 12,973,437.29/3,578.12
  6. Step 6: Final answer
    x = 3,625.77

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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.