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Finding the Fourth Proportional to 8,040.95, 12,079.96 and 7,708.81

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Solution

The fourth proportional to 8,040.95, 12,079.96 and 7,708.81 is: 11,580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,040.95 : 12,079.96 = 7,708.81 : x
  2. Step 2: Convert to fraction form
    8,040.95/12,079.96 = 7,708.81/x
  3. Step 3: Cross multiply
    8,040.95x = 12,079.96 × 7,708.81
  4. Step 4: Simplify right side
    8,040.95x = 93,122,056.05
  5. Step 5: Solve for x
    x = 93,122,056.05/8,040.95
  6. Step 6: Final answer
    x = 11,580.98

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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.