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Finding the Fourth Proportional to 8,376.28, 12,549.84 and 6,189.28

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Solution

The fourth proportional to 8,376.28, 12,549.84 and 6,189.28 is: 9,273.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,376.28 : 12,549.84 = 6,189.28 : x
  2. Step 2: Convert to fraction form
    8,376.28/12,549.84 = 6,189.28/x
  3. Step 3: Cross multiply
    8,376.28x = 12,549.84 × 6,189.28
  4. Step 4: Simplify right side
    8,376.28x = 77,674,473.72
  5. Step 5: Solve for x
    x = 77,674,473.72/8,376.28
  6. Step 6: Final answer
    x = 9,273.15

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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.