Home / 2,121.10-2,926.97-1,176.80

Finding the Fourth Proportional to 2,121.10, 2,926.97 and 1,176.80

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Solution

The fourth proportional to 2,121.10, 2,926.97 and 1,176.80 is: 1,623.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.10 : 2,926.97 = 1,176.80 : x
  2. Step 2: Convert to fraction form
    2,121.10/2,926.97 = 1,176.80/x
  3. Step 3: Cross multiply
    2,121.10x = 2,926.97 × 1,176.80
  4. Step 4: Simplify right side
    2,121.10x = 3,444,458.30
  5. Step 5: Solve for x
    x = 3,444,458.30/2,121.10
  6. Step 6: Final answer
    x = 1,623.90

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1.5x scale

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.