Home / 5,811.32-8,716.91-1,428.81

Finding the Fourth Proportional to 5,811.32, 8,716.91 and 1,428.81

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Solution

The fourth proportional to 5,811.32, 8,716.91 and 1,428.81 is: 2,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,811.32 : 8,716.91 = 1,428.81 : x
  2. Step 2: Convert to fraction form
    5,811.32/8,716.91 = 1,428.81/x
  3. Step 3: Cross multiply
    5,811.32x = 8,716.91 × 1,428.81
  4. Step 4: Simplify right side
    5,811.32x = 12,454,801.03
  5. Step 5: Solve for x
    x = 12,454,801.03/5,811.32
  6. Step 6: Final answer
    x = 2,143.20

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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.