Home / 8,756.54-13,119.96-5,286.50

Finding the Fourth Proportional to 8,756.54, 13,119.96 and 5,286.50

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Solution

The fourth proportional to 8,756.54, 13,119.96 and 5,286.50 is: 7,920.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.54 : 13,119.96 = 5,286.50 : x
  2. Step 2: Convert to fraction form
    8,756.54/13,119.96 = 5,286.50/x
  3. Step 3: Cross multiply
    8,756.54x = 13,119.96 × 5,286.50
  4. Step 4: Simplify right side
    8,756.54x = 69,358,668.54
  5. Step 5: Solve for x
    x = 69,358,668.54/8,756.54
  6. Step 6: Final answer
    x = 7,920.78

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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.