Home / 3,270.21-4,904.35-1,420.88

Finding the Fourth Proportional to 3,270.21, 4,904.35 and 1,420.88

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Solution

The fourth proportional to 3,270.21, 4,904.35 and 1,420.88 is: 2,130.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.21 : 4,904.35 = 1,420.88 : x
  2. Step 2: Convert to fraction form
    3,270.21/4,904.35 = 1,420.88/x
  3. Step 3: Cross multiply
    3,270.21x = 4,904.35 × 1,420.88
  4. Step 4: Simplify right side
    3,270.21x = 6,968,464.75
  5. Step 5: Solve for x
    x = 6,968,464.75/3,270.21
  6. Step 6: Final answer
    x = 2,130.89

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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.