Home / 8,716.33-12,028.58-5,131.47

Finding the Fourth Proportional to 8,716.33, 12,028.58 and 5,131.47

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Solution

The fourth proportional to 8,716.33, 12,028.58 and 5,131.47 is: 7,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.33 : 12,028.58 = 5,131.47 : x
  2. Step 2: Convert to fraction form
    8,716.33/12,028.58 = 5,131.47/x
  3. Step 3: Cross multiply
    8,716.33x = 12,028.58 × 5,131.47
  4. Step 4: Simplify right side
    8,716.33x = 61,724,297.41
  5. Step 5: Solve for x
    x = 61,724,297.41/8,716.33
  6. Step 6: Final answer
    x = 7,081.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.