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Finding the Fourth Proportional to 8,438.18, 11,644.18 and 5,082.08

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Solution

The fourth proportional to 8,438.18, 11,644.18 and 5,082.08 is: 7,012.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.18 : 11,644.18 = 5,082.08 : x
  2. Step 2: Convert to fraction form
    8,438.18/11,644.18 = 5,082.08/x
  3. Step 3: Cross multiply
    8,438.18x = 11,644.18 × 5,082.08
  4. Step 4: Simplify right side
    8,438.18x = 59,176,654.29
  5. Step 5: Solve for x
    x = 59,176,654.29/8,438.18
  6. Step 6: Final answer
    x = 7,012.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.