Home / 8,931.40-13,395.39-3,086.80

Finding the Fourth Proportional to 8,931.40, 13,395.39 and 3,086.80

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Solution

The fourth proportional to 8,931.40, 13,395.39 and 3,086.80 is: 4,629.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.40 : 13,395.39 = 3,086.80 : x
  2. Step 2: Convert to fraction form
    8,931.40/13,395.39 = 3,086.80/x
  3. Step 3: Cross multiply
    8,931.40x = 13,395.39 × 3,086.80
  4. Step 4: Simplify right side
    8,931.40x = 41,348,889.85
  5. Step 5: Solve for x
    x = 41,348,889.85/8,931.40
  6. Step 6: Final answer
    x = 4,629.61

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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.