Home / 8,215.80-11,338.56-4,679.88

Finding the Fourth Proportional to 8,215.80, 11,338.56 and 4,679.88

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Solution

The fourth proportional to 8,215.80, 11,338.56 and 4,679.88 is: 6,458.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.80 : 11,338.56 = 4,679.88 : x
  2. Step 2: Convert to fraction form
    8,215.80/11,338.56 = 4,679.88/x
  3. Step 3: Cross multiply
    8,215.80x = 11,338.56 × 4,679.88
  4. Step 4: Simplify right side
    8,215.80x = 53,063,100.17
  5. Step 5: Solve for x
    x = 53,063,100.17/8,215.80
  6. Step 6: Final answer
    x = 6,458.67

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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.