Home / 3,420.30-5,128.62-1,775.19

Finding the Fourth Proportional to 3,420.30, 5,128.62 and 1,775.19

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Solution

The fourth proportional to 3,420.30, 5,128.62 and 1,775.19 is: 2,661.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,420.30 : 5,128.62 = 1,775.19 : x
  2. Step 2: Convert to fraction form
    3,420.30/5,128.62 = 1,775.19/x
  3. Step 3: Cross multiply
    3,420.30x = 5,128.62 × 1,775.19
  4. Step 4: Simplify right side
    3,420.30x = 9,104,274.94
  5. Step 5: Solve for x
    x = 9,104,274.94/3,420.30
  6. Step 6: Final answer
    x = 2,661.84

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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.