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Finding the Fourth Proportional to 3,465.86, 5,198.44 and 868.80

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Solution

The fourth proportional to 3,465.86, 5,198.44 and 868.80 is: 1,303.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.86 : 5,198.44 = 868.80 : x
  2. Step 2: Convert to fraction form
    3,465.86/5,198.44 = 868.80/x
  3. Step 3: Cross multiply
    3,465.86x = 5,198.44 × 868.80
  4. Step 4: Simplify right side
    3,465.86x = 4,516,404.67
  5. Step 5: Solve for x
    x = 4,516,404.67/3,465.86
  6. Step 6: Final answer
    x = 1,303.11

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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.