Home / 8,132.32-11,227.78-6,643.80

Finding the Fourth Proportional to 8,132.32, 11,227.78 and 6,643.80

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Solution

The fourth proportional to 8,132.32, 11,227.78 and 6,643.80 is: 9,172.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,132.32 : 11,227.78 = 6,643.80 : x
  2. Step 2: Convert to fraction form
    8,132.32/11,227.78 = 6,643.80/x
  3. Step 3: Cross multiply
    8,132.32x = 11,227.78 × 6,643.80
  4. Step 4: Simplify right side
    8,132.32x = 74,595,124.76
  5. Step 5: Solve for x
    x = 74,595,124.76/8,132.32
  6. Step 6: Final answer
    x = 9,172.67

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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.