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Finding the Fourth Proportional to 6,642.14, 9,965.27 and 4,173.55

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Solution

The fourth proportional to 6,642.14, 9,965.27 and 4,173.55 is: 6,261.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.14 : 9,965.27 = 4,173.55 : x
  2. Step 2: Convert to fraction form
    6,642.14/9,965.27 = 4,173.55/x
  3. Step 3: Cross multiply
    6,642.14x = 9,965.27 × 4,173.55
  4. Step 4: Simplify right side
    6,642.14x = 41,590,538.13
  5. Step 5: Solve for x
    x = 41,590,538.13/6,642.14
  6. Step 6: Final answer
    x = 6,261.62

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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.