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Finding the Fourth Proportional to 5,219.30, 7,321.60 and 5,219.30

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Solution

The fourth proportional to 5,219.30, 7,321.60 and 5,219.30 is: 7,321.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,219.30 : 7,321.60 = 5,219.30 : x
  2. Step 2: Convert to fraction form
    5,219.30/7,321.60 = 5,219.30/x
  3. Step 3: Cross multiply
    5,219.30x = 7,321.60 × 5,219.30
  4. Step 4: Simplify right side
    5,219.30x = 38,213,626.88
  5. Step 5: Solve for x
    x = 38,213,626.88/5,219.30
  6. Step 6: Final answer
    x = 7,321.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.