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Finding the Fourth Proportional to 3,658.09, 5,487.71 and 1,578.68

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Solution

The fourth proportional to 3,658.09, 5,487.71 and 1,578.68 is: 2,368.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,658.09 : 5,487.71 = 1,578.68 : x
  2. Step 2: Convert to fraction form
    3,658.09/5,487.71 = 1,578.68/x
  3. Step 3: Cross multiply
    3,658.09x = 5,487.71 × 1,578.68
  4. Step 4: Simplify right side
    3,658.09x = 8,663,343.85
  5. Step 5: Solve for x
    x = 8,663,343.85/3,658.09
  6. Step 6: Final answer
    x = 2,368.27

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1.5x scale

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.