Home / 8,756.64-13,139.97-3,209.25

Finding the Fourth Proportional to 8,756.64, 13,139.97 and 3,209.25

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Solution

The fourth proportional to 8,756.64, 13,139.97 and 3,209.25 is: 4,815.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.64 : 13,139.97 = 3,209.25 : x
  2. Step 2: Convert to fraction form
    8,756.64/13,139.97 = 3,209.25/x
  3. Step 3: Cross multiply
    8,756.64x = 13,139.97 × 3,209.25
  4. Step 4: Simplify right side
    8,756.64x = 42,169,448.72
  5. Step 5: Solve for x
    x = 42,169,448.72/8,756.64
  6. Step 6: Final answer
    x = 4,815.71

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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.