Home / 2,760.58-4,142.49-1,979.74

Finding the Fourth Proportional to 2,760.58, 4,142.49 and 1,979.74

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Solution

The fourth proportional to 2,760.58, 4,142.49 and 1,979.74 is: 2,970.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.58 : 4,142.49 = 1,979.74 : x
  2. Step 2: Convert to fraction form
    2,760.58/4,142.49 = 1,979.74/x
  3. Step 3: Cross multiply
    2,760.58x = 4,142.49 × 1,979.74
  4. Step 4: Simplify right side
    2,760.58x = 8,201,053.15
  5. Step 5: Solve for x
    x = 8,201,053.15/2,760.58
  6. Step 6: Final answer
    x = 2,970.77

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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.