Home / 5,143.70-7,714.91-1,811.36

Finding the Fourth Proportional to 5,143.70, 7,714.91 and 1,811.36

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Solution

The fourth proportional to 5,143.70, 7,714.91 and 1,811.36 is: 2,716.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.70 : 7,714.91 = 1,811.36 : x
  2. Step 2: Convert to fraction form
    5,143.70/7,714.91 = 1,811.36/x
  3. Step 3: Cross multiply
    5,143.70x = 7,714.91 × 1,811.36
  4. Step 4: Simplify right side
    5,143.70x = 13,974,503.19
  5. Step 5: Solve for x
    x = 13,974,503.19/5,143.70
  6. Step 6: Final answer
    x = 2,716.82

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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.