Home / 8,040.45-12,079.21-7,708.31

Finding the Fourth Proportional to 8,040.45, 12,079.21 and 7,708.31

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Solution

The fourth proportional to 8,040.45, 12,079.21 and 7,708.31 is: 11,580.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,040.45 : 12,079.21 = 7,708.31 : x
  2. Step 2: Convert to fraction form
    8,040.45/12,079.21 = 7,708.31/x
  3. Step 3: Cross multiply
    8,040.45x = 12,079.21 × 7,708.31
  4. Step 4: Simplify right side
    8,040.45x = 93,110,234.84
  5. Step 5: Solve for x
    x = 93,110,234.84/8,040.45
  6. Step 6: Final answer
    x = 11,580.23

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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.