Home / 3,214.10-4,820.61-905.06

Finding the Fourth Proportional to 3,214.10, 4,820.61 and 905.06

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Solution

The fourth proportional to 3,214.10, 4,820.61 and 905.06 is: 1,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,214.10 : 4,820.61 = 905.06 : x
  2. Step 2: Convert to fraction form
    3,214.10/4,820.61 = 905.06/x
  3. Step 3: Cross multiply
    3,214.10x = 4,820.61 × 905.06
  4. Step 4: Simplify right side
    3,214.10x = 4,362,956.73
  5. Step 5: Solve for x
    x = 4,362,956.73/3,214.10
  6. Step 6: Final answer
    x = 1,357.44

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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.