Home / 5,419.72-8,130.18-1,722.28

Finding the Fourth Proportional to 5,419.72, 8,130.18 and 1,722.28

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Solution

The fourth proportional to 5,419.72, 8,130.18 and 1,722.28 is: 2,583.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.72 : 8,130.18 = 1,722.28 : x
  2. Step 2: Convert to fraction form
    5,419.72/8,130.18 = 1,722.28/x
  3. Step 3: Cross multiply
    5,419.72x = 8,130.18 × 1,722.28
  4. Step 4: Simplify right side
    5,419.72x = 14,002,446.41
  5. Step 5: Solve for x
    x = 14,002,446.41/5,419.72
  6. Step 6: Final answer
    x = 2,583.61

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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.