Home / 2,891.55-3,990.73-1,696.83

Finding the Fourth Proportional to 2,891.55, 3,990.73 and 1,696.83

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Solution

The fourth proportional to 2,891.55, 3,990.73 and 1,696.83 is: 2,341.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.55 : 3,990.73 = 1,696.83 : x
  2. Step 2: Convert to fraction form
    2,891.55/3,990.73 = 1,696.83/x
  3. Step 3: Cross multiply
    2,891.55x = 3,990.73 × 1,696.83
  4. Step 4: Simplify right side
    2,891.55x = 6,771,561.95
  5. Step 5: Solve for x
    x = 6,771,561.95/2,891.55
  6. Step 6: Final answer
    x = 2,341.85

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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.