Home / 1,660.45-2,489.51-1,192.21

Finding the Fourth Proportional to 1,660.45, 2,489.51 and 1,192.21

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Solution

The fourth proportional to 1,660.45, 2,489.51 and 1,192.21 is: 1,787.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660.45 : 2,489.51 = 1,192.21 : x
  2. Step 2: Convert to fraction form
    1,660.45/2,489.51 = 1,192.21/x
  3. Step 3: Cross multiply
    1,660.45x = 2,489.51 × 1,192.21
  4. Step 4: Simplify right side
    1,660.45x = 2,968,006.27
  5. Step 5: Solve for x
    x = 2,968,006.27/1,660.45
  6. Step 6: Final answer
    x = 1,787.48

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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.