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Finding the Fourth Proportional to 7,173.50, 10,777.16 and 4,219.50

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Solution

The fourth proportional to 7,173.50, 10,777.16 and 4,219.50 is: 6,339.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,173.50 : 10,777.16 = 4,219.50 : x
  2. Step 2: Convert to fraction form
    7,173.50/10,777.16 = 4,219.50/x
  3. Step 3: Cross multiply
    7,173.50x = 10,777.16 × 4,219.50
  4. Step 4: Simplify right side
    7,173.50x = 45,474,205.52
  5. Step 5: Solve for x
    x = 45,474,205.52/7,173.50
  6. Step 6: Final answer
    x = 6,339.20

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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.