Home / 1,979.46-2,966.49-1,429.20

Finding the Fourth Proportional to 1,979.46, 2,966.49 and 1,429.20

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Solution

The fourth proportional to 1,979.46, 2,966.49 and 1,429.20 is: 2,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.46 : 2,966.49 = 1,429.20 : x
  2. Step 2: Convert to fraction form
    1,979.46/2,966.49 = 1,429.20/x
  3. Step 3: Cross multiply
    1,979.46x = 2,966.49 × 1,429.20
  4. Step 4: Simplify right side
    1,979.46x = 4,239,707.51
  5. Step 5: Solve for x
    x = 4,239,707.51/1,979.46
  6. Step 6: Final answer
    x = 2,141.85

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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.