Home / 8,839.94-13,259.21-5,139.81

Finding the Fourth Proportional to 8,839.94, 13,259.21 and 5,139.81

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Solution

The fourth proportional to 8,839.94, 13,259.21 and 5,139.81 is: 7,709.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,839.94 : 13,259.21 = 5,139.81 : x
  2. Step 2: Convert to fraction form
    8,839.94/13,259.21 = 5,139.81/x
  3. Step 3: Cross multiply
    8,839.94x = 13,259.21 × 5,139.81
  4. Step 4: Simplify right side
    8,839.94x = 68,149,794.45
  5. Step 5: Solve for x
    x = 68,149,794.45/8,839.94
  6. Step 6: Final answer
    x = 7,709.31

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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.