Home / 7,829.92-10,805.79-5,172.67

Finding the Fourth Proportional to 7,829.92, 10,805.79 and 5,172.67

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Solution

The fourth proportional to 7,829.92, 10,805.79 and 5,172.67 is: 7,138.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,829.92 : 10,805.79 = 5,172.67 : x
  2. Step 2: Convert to fraction form
    7,829.92/10,805.79 = 5,172.67/x
  3. Step 3: Cross multiply
    7,829.92x = 10,805.79 × 5,172.67
  4. Step 4: Simplify right side
    7,829.92x = 55,894,785.76
  5. Step 5: Solve for x
    x = 55,894,785.76/7,829.92
  6. Step 6: Final answer
    x = 7,138.62

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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.