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Finding the Fourth Proportional to 6,641.12, 9,964.20 and 4,173.20

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Solution

The fourth proportional to 6,641.12, 9,964.20 and 4,173.20 is: 6,261.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641.12 : 9,964.20 = 4,173.20 : x
  2. Step 2: Convert to fraction form
    6,641.12/9,964.20 = 4,173.20/x
  3. Step 3: Cross multiply
    6,641.12x = 9,964.20 × 4,173.20
  4. Step 4: Simplify right side
    6,641.12x = 41,582,599.44
  5. Step 5: Solve for x
    x = 41,582,599.44/6,641.12
  6. Step 6: Final answer
    x = 6,261.38

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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.