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Finding the Fourth Proportional to 3,653.87, 5,503.26 and 3,397.21

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Solution

The fourth proportional to 3,653.87, 5,503.26 and 3,397.21 is: 5,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,653.87 : 5,503.26 = 3,397.21 : x
  2. Step 2: Convert to fraction form
    3,653.87/5,503.26 = 3,397.21/x
  3. Step 3: Cross multiply
    3,653.87x = 5,503.26 × 3,397.21
  4. Step 4: Simplify right side
    3,653.87x = 18,695,728.89
  5. Step 5: Solve for x
    x = 18,695,728.89/3,653.87
  6. Step 6: Final answer
    x = 5,116.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.