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Finding the Fourth Proportional to 3,720.69, 5,578.92 and 1,530.95

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Solution

The fourth proportional to 3,720.69, 5,578.92 and 1,530.95 is: 2,295.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.69 : 5,578.92 = 1,530.95 : x
  2. Step 2: Convert to fraction form
    3,720.69/5,578.92 = 1,530.95/x
  3. Step 3: Cross multiply
    3,720.69x = 5,578.92 × 1,530.95
  4. Step 4: Simplify right side
    3,720.69x = 8,541,019.68
  5. Step 5: Solve for x
    x = 8,541,019.68/3,720.69
  6. Step 6: Final answer
    x = 2,295.55

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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.