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Finding the Fourth Proportional to 6,425.28, 9,621.48 and 5,692.64

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Solution

The fourth proportional to 6,425.28, 9,621.48 and 5,692.64 is: 8,524.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,425.28 : 9,621.48 = 5,692.64 : x
  2. Step 2: Convert to fraction form
    6,425.28/9,621.48 = 5,692.64/x
  3. Step 3: Cross multiply
    6,425.28x = 9,621.48 × 5,692.64
  4. Step 4: Simplify right side
    6,425.28x = 54,771,621.91
  5. Step 5: Solve for x
    x = 54,771,621.91/6,425.28
  6. Step 6: Final answer
    x = 8,524.39

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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.