Home / 5,419.85-8,130.04-1,722.35

Finding the Fourth Proportional to 5,419.85, 8,130.04 and 1,722.35

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Solution

The fourth proportional to 5,419.85, 8,130.04 and 1,722.35 is: 2,583.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.85 : 8,130.04 = 1,722.35 : x
  2. Step 2: Convert to fraction form
    5,419.85/8,130.04 = 1,722.35/x
  3. Step 3: Cross multiply
    5,419.85x = 8,130.04 × 1,722.35
  4. Step 4: Simplify right side
    5,419.85x = 14,002,790.41
  5. Step 5: Solve for x
    x = 14,002,790.41/5,419.85
  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.