Home / 3,270.40-4,905.90-1,322.20

Finding the Fourth Proportional to 3,270.40, 4,905.90 and 1,322.20

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Solution

The fourth proportional to 3,270.40, 4,905.90 and 1,322.20 is: 1,983.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.40 : 4,905.90 = 1,322.20 : x
  2. Step 2: Convert to fraction form
    3,270.40/4,905.90 = 1,322.20/x
  3. Step 3: Cross multiply
    3,270.40x = 4,905.90 × 1,322.20
  4. Step 4: Simplify right side
    3,270.40x = 6,486,580.98
  5. Step 5: Solve for x
    x = 6,486,580.98/3,270.40
  6. Step 6: Final answer
    x = 1,983.42

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1.5x scale

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.