Home / 8,749.76-13,119.82-5,979.56

Finding the Fourth Proportional to 8,749.76, 13,119.82 and 5,979.56

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Solution

The fourth proportional to 8,749.76, 13,119.82 and 5,979.56 is: 8,966.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.76 : 13,119.82 = 5,979.56 : x
  2. Step 2: Convert to fraction form
    8,749.76/13,119.82 = 5,979.56/x
  3. Step 3: Cross multiply
    8,749.76x = 13,119.82 × 5,979.56
  4. Step 4: Simplify right side
    8,749.76x = 78,450,750.88
  5. Step 5: Solve for x
    x = 78,450,750.88/8,749.76
  6. Step 6: Final answer
    x = 8,966.05

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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.