Home / 3,421.20-5,125.86-1,775.28

Finding the Fourth Proportional to 3,421.20, 5,125.86 and 1,775.28

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Solution

The fourth proportional to 3,421.20, 5,125.86 and 1,775.28 is: 2,659.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,421.20 : 5,125.86 = 1,775.28 : x
  2. Step 2: Convert to fraction form
    3,421.20/5,125.86 = 1,775.28/x
  3. Step 3: Cross multiply
    3,421.20x = 5,125.86 × 1,775.28
  4. Step 4: Simplify right side
    3,421.20x = 9,099,836.74
  5. Step 5: Solve for x
    x = 9,099,836.74/3,421.20
  6. Step 6: Final answer
    x = 2,659.84

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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.