Home / 10,253.30-15,379.96-2,857.78

Finding the Fourth Proportional to 10,253.30, 15,379.96 and 2,857.78

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Solution

The fourth proportional to 10,253.30, 15,379.96 and 2,857.78 is: 4,286.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,253.30 : 15,379.96 = 2,857.78 : x
  2. Step 2: Convert to fraction form
    10,253.30/15,379.96 = 2,857.78/x
  3. Step 3: Cross multiply
    10,253.30x = 15,379.96 × 2,857.78
  4. Step 4: Simplify right side
    10,253.30x = 43,952,542.09
  5. Step 5: Solve for x
    x = 43,952,542.09/10,253.30
  6. Step 6: Final answer
    x = 4,286.67

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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.