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Finding the Fourth Proportional to 4,573.21, 6,861.21 and 1,939.34

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Solution

The fourth proportional to 4,573.21, 6,861.21 and 1,939.34 is: 2,909.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,573.21 : 6,861.21 = 1,939.34 : x
  2. Step 2: Convert to fraction form
    4,573.21/6,861.21 = 1,939.34/x
  3. Step 3: Cross multiply
    4,573.21x = 6,861.21 × 1,939.34
  4. Step 4: Simplify right side
    4,573.21x = 13,306,228.88
  5. Step 5: Solve for x
    x = 13,306,228.88/4,573.21
  6. Step 6: Final answer
    x = 2,909.60

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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.