Home / 2,005.92-2,986.64-1,996.20

Finding the Fourth Proportional to 2,005.92, 2,986.64 and 1,996.20

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Solution

The fourth proportional to 2,005.92, 2,986.64 and 1,996.20 is: 2,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,005.92 : 2,986.64 = 1,996.20 : x
  2. Step 2: Convert to fraction form
    2,005.92/2,986.64 = 1,996.20/x
  3. Step 3: Cross multiply
    2,005.92x = 2,986.64 × 1,996.20
  4. Step 4: Simplify right side
    2,005.92x = 5,961,920.79
  5. Step 5: Solve for x
    x = 5,961,920.79/2,005.92
  6. Step 6: Final answer
    x = 2,972.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.