Home / 1,979.77-2,730.54-1,270.84

Finding the Fourth Proportional to 1,979.77, 2,730.54 and 1,270.84

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Solution

The fourth proportional to 1,979.77, 2,730.54 and 1,270.84 is: 1,752.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.77 : 2,730.54 = 1,270.84 : x
  2. Step 2: Convert to fraction form
    1,979.77/2,730.54 = 1,270.84/x
  3. Step 3: Cross multiply
    1,979.77x = 2,730.54 × 1,270.84
  4. Step 4: Simplify right side
    1,979.77x = 3,470,079.45
  5. Step 5: Solve for x
    x = 3,470,079.45/1,979.77
  6. Step 6: Final answer
    x = 1,752.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.