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Finding the Fourth Proportional to 3,465.55, 5,198.33 and 868.49

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Solution

The fourth proportional to 3,465.55, 5,198.33 and 868.49 is: 1,302.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.55 : 5,198.33 = 868.49 : x
  2. Step 2: Convert to fraction form
    3,465.55/5,198.33 = 868.49/x
  3. Step 3: Cross multiply
    3,465.55x = 5,198.33 × 868.49
  4. Step 4: Simplify right side
    3,465.55x = 4,514,697.62
  5. Step 5: Solve for x
    x = 4,514,697.62/3,465.55
  6. Step 6: Final answer
    x = 1,302.74

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Similar ratio
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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.