Home / 10,255.30-15,382.96-2,859.78

Finding the Fourth Proportional to 10,255.30, 15,382.96 and 2,859.78

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Solution

The fourth proportional to 10,255.30, 15,382.96 and 2,859.78 is: 4,289.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.30 : 15,382.96 = 2,859.78 : x
  2. Step 2: Convert to fraction form
    10,255.30/15,382.96 = 2,859.78/x
  3. Step 3: Cross multiply
    10,255.30x = 15,382.96 × 2,859.78
  4. Step 4: Simplify right side
    10,255.30x = 43,991,881.35
  5. Step 5: Solve for x
    x = 43,991,881.35/10,255.30
  6. Step 6: Final answer
    x = 4,289.67

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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.