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Finding the Fourth Proportional to 3,460.40, 5,190.66 and 863.34

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Solution

The fourth proportional to 3,460.40, 5,190.66 and 863.34 is: 1,295.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,460.40 : 5,190.66 = 863.34 : x
  2. Step 2: Convert to fraction form
    3,460.40/5,190.66 = 863.34/x
  3. Step 3: Cross multiply
    3,460.40x = 5,190.66 × 863.34
  4. Step 4: Simplify right side
    3,460.40x = 4,481,304.40
  5. Step 5: Solve for x
    x = 4,481,304.40/3,460.40
  6. Step 6: Final answer
    x = 1,295.02

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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.