Home / 3,402.12-4,690.62-2,221.32

Finding the Fourth Proportional to 3,402.12, 4,690.62 and 2,221.32

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Solution

The fourth proportional to 3,402.12, 4,690.62 and 2,221.32 is: 3,062.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,402.12 : 4,690.62 = 2,221.32 : x
  2. Step 2: Convert to fraction form
    3,402.12/4,690.62 = 2,221.32/x
  3. Step 3: Cross multiply
    3,402.12x = 4,690.62 × 2,221.32
  4. Step 4: Simplify right side
    3,402.12x = 10,419,368.02
  5. Step 5: Solve for x
    x = 10,419,368.02/3,402.12
  6. Step 6: Final answer
    x = 3,062.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.