Home / 2,660.48-3,986.96-2,001.92

Finding the Fourth Proportional to 2,660.48, 3,986.96 and 2,001.92

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Solution

The fourth proportional to 2,660.48, 3,986.96 and 2,001.92 is: 3,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.48 : 3,986.96 = 2,001.92 : x
  2. Step 2: Convert to fraction form
    2,660.48/3,986.96 = 2,001.92/x
  3. Step 3: Cross multiply
    2,660.48x = 3,986.96 × 2,001.92
  4. Step 4: Simplify right side
    2,660.48x = 7,981,574.96
  5. Step 5: Solve for x
    x = 7,981,574.96/2,660.48
  6. Step 6: Final answer
    x = 3,000.05

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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.