Home / 5,420.48-8,127.68-1,722.04

Finding the Fourth Proportional to 5,420.48, 8,127.68 and 1,722.04

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Solution

The fourth proportional to 5,420.48, 8,127.68 and 1,722.04 is: 2,582.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.48 : 8,127.68 = 1,722.04 : x
  2. Step 2: Convert to fraction form
    5,420.48/8,127.68 = 1,722.04/x
  3. Step 3: Cross multiply
    5,420.48x = 8,127.68 × 1,722.04
  4. Step 4: Simplify right side
    5,420.48x = 13,996,190.07
  5. Step 5: Solve for x
    x = 13,996,190.07/5,420.48
  6. Step 6: Final answer
    x = 2,582.09

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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.