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Finding the Fourth Proportional to 3,503.49, 5,255.25 and 906.42

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Solution

The fourth proportional to 3,503.49, 5,255.25 and 906.42 is: 1,359.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,503.49 : 5,255.25 = 906.42 : x
  2. Step 2: Convert to fraction form
    3,503.49/5,255.25 = 906.42/x
  3. Step 3: Cross multiply
    3,503.49x = 5,255.25 × 906.42
  4. Step 4: Simplify right side
    3,503.49x = 4,763,463.71
  5. Step 5: Solve for x
    x = 4,763,463.71/3,503.49
  6. Step 6: Final answer
    x = 1,359.63

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Double scale
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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.