Home / 8,331.12-11,489.50-6,912.56

Finding the Fourth Proportional to 8,331.12, 11,489.50 and 6,912.56

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Solution

The fourth proportional to 8,331.12, 11,489.50 and 6,912.56 is: 9,533.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.12 : 11,489.50 = 6,912.56 : x
  2. Step 2: Convert to fraction form
    8,331.12/11,489.50 = 6,912.56/x
  3. Step 3: Cross multiply
    8,331.12x = 11,489.50 × 6,912.56
  4. Step 4: Simplify right side
    8,331.12x = 79,421,858.12
  5. Step 5: Solve for x
    x = 79,421,858.12/8,331.12
  6. Step 6: Final answer
    x = 9,533.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.