Home / 7,912.61-11,852.17-5,131.02

Finding the Fourth Proportional to 7,912.61, 11,852.17 and 5,131.02

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Solution

The fourth proportional to 7,912.61, 11,852.17 and 5,131.02 is: 7,685.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.61 : 11,852.17 = 5,131.02 : x
  2. Step 2: Convert to fraction form
    7,912.61/11,852.17 = 5,131.02/x
  3. Step 3: Cross multiply
    7,912.61x = 11,852.17 × 5,131.02
  4. Step 4: Simplify right side
    7,912.61x = 60,813,748.46
  5. Step 5: Solve for x
    x = 60,813,748.46/7,912.61
  6. Step 6: Final answer
    x = 7,685.67

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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.