Home / 3,270.13-4,904.20-1,420.78

Finding the Fourth Proportional to 3,270.13, 4,904.20 and 1,420.78

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Solution

The fourth proportional to 3,270.13, 4,904.20 and 1,420.78 is: 2,130.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.13 : 4,904.20 = 1,420.78 : x
  2. Step 2: Convert to fraction form
    3,270.13/4,904.20 = 1,420.78/x
  3. Step 3: Cross multiply
    3,270.13x = 4,904.20 × 1,420.78
  4. Step 4: Simplify right side
    3,270.13x = 6,967,789.28
  5. Step 5: Solve for x
    x = 6,967,789.28/3,270.13
  6. Step 6: Final answer
    x = 2,130.74

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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.