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Finding the Fourth Proportional to 8,328.81, 12,504.19 and 7,641.12

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Solution

The fourth proportional to 8,328.81, 12,504.19 and 7,641.12 is: 11,471.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,328.81 : 12,504.19 = 7,641.12 : x
  2. Step 2: Convert to fraction form
    8,328.81/12,504.19 = 7,641.12/x
  3. Step 3: Cross multiply
    8,328.81x = 12,504.19 × 7,641.12
  4. Step 4: Simplify right side
    8,328.81x = 95,546,016.29
  5. Step 5: Solve for x
    x = 95,546,016.29/8,328.81
  6. Step 6: Final answer
    x = 11,471.75

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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.