Home / 2,982.32-4,116.05-2,145.79

Finding the Fourth Proportional to 2,982.32, 4,116.05 and 2,145.79

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Solution

The fourth proportional to 2,982.32, 4,116.05 and 2,145.79 is: 2,961.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.32 : 4,116.05 = 2,145.79 : x
  2. Step 2: Convert to fraction form
    2,982.32/4,116.05 = 2,145.79/x
  3. Step 3: Cross multiply
    2,982.32x = 4,116.05 × 2,145.79
  4. Step 4: Simplify right side
    2,982.32x = 8,832,181.39
  5. Step 5: Solve for x
    x = 8,832,181.39/2,982.32
  6. Step 6: Final answer
    x = 2,961.51

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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.