Home / 2,120.91-2,926.84-1,176.71

Finding the Fourth Proportional to 2,120.91, 2,926.84 and 1,176.71

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Solution

The fourth proportional to 2,120.91, 2,926.84 and 1,176.71 is: 1,623.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.91 : 2,926.84 = 1,176.71 : x
  2. Step 2: Convert to fraction form
    2,120.91/2,926.84 = 1,176.71/x
  3. Step 3: Cross multiply
    2,120.91x = 2,926.84 × 1,176.71
  4. Step 4: Simplify right side
    2,120.91x = 3,444,024.32
  5. Step 5: Solve for x
    x = 3,444,024.32/2,120.91
  6. Step 6: Final answer
    x = 1,623.84

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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.