Home / 8,756.87-13,133.68-2,911.91

Finding the Fourth Proportional to 8,756.87, 13,133.68 and 2,911.91

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Solution

The fourth proportional to 8,756.87, 13,133.68 and 2,911.91 is: 4,367.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.87 : 13,133.68 = 2,911.91 : x
  2. Step 2: Convert to fraction form
    8,756.87/13,133.68 = 2,911.91/x
  3. Step 3: Cross multiply
    8,756.87x = 13,133.68 × 2,911.91
  4. Step 4: Simplify right side
    8,756.87x = 38,244,021.18
  5. Step 5: Solve for x
    x = 38,244,021.18/8,756.87
  6. Step 6: Final answer
    x = 4,367.32

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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.