Home / 2,116.83-2,919.79-1,276.65

Finding the Fourth Proportional to 2,116.83, 2,919.79 and 1,276.65

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Solution

The fourth proportional to 2,116.83, 2,919.79 and 1,276.65 is: 1,760.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.83 : 2,919.79 = 1,276.65 : x
  2. Step 2: Convert to fraction form
    2,116.83/2,919.79 = 1,276.65/x
  3. Step 3: Cross multiply
    2,116.83x = 2,919.79 × 1,276.65
  4. Step 4: Simplify right side
    2,116.83x = 3,727,549.90
  5. Step 5: Solve for x
    x = 3,727,549.90/2,116.83
  6. Step 6: Final answer
    x = 1,760.91

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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.