Home / 3,281.35-4,921.16-1,306.90

Finding the Fourth Proportional to 3,281.35, 4,921.16 and 1,306.90

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Solution

The fourth proportional to 3,281.35, 4,921.16 and 1,306.90 is: 1,960.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,281.35 : 4,921.16 = 1,306.90 : x
  2. Step 2: Convert to fraction form
    3,281.35/4,921.16 = 1,306.90/x
  3. Step 3: Cross multiply
    3,281.35x = 4,921.16 × 1,306.90
  4. Step 4: Simplify right side
    3,281.35x = 6,431,464.00
  5. Step 5: Solve for x
    x = 6,431,464.00/3,281.35
  6. Step 6: Final answer
    x = 1,960.01

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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.