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Finding the Fourth Proportional to 6,618.42, 9,927.63 and 3,145.14

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Solution

The fourth proportional to 6,618.42, 9,927.63 and 3,145.14 is: 4,717.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618.42 : 9,927.63 = 3,145.14 : x
  2. Step 2: Convert to fraction form
    6,618.42/9,927.63 = 3,145.14/x
  3. Step 3: Cross multiply
    6,618.42x = 9,927.63 × 3,145.14
  4. Step 4: Simplify right side
    6,618.42x = 31,223,786.22
  5. Step 5: Solve for x
    x = 31,223,786.22/6,618.42
  6. Step 6: Final answer
    x = 4,717.71

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Similar ratio
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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.