Home / 4,881.70-6,736.14-2,891.80

Finding the Fourth Proportional to 4,881.70, 6,736.14 and 2,891.80

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Solution

The fourth proportional to 4,881.70, 6,736.14 and 2,891.80 is: 3,990.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,881.70 : 6,736.14 = 2,891.80 : x
  2. Step 2: Convert to fraction form
    4,881.70/6,736.14 = 2,891.80/x
  3. Step 3: Cross multiply
    4,881.70x = 6,736.14 × 2,891.80
  4. Step 4: Simplify right side
    4,881.70x = 19,479,569.65
  5. Step 5: Solve for x
    x = 19,479,569.65/4,881.70
  6. Step 6: Final answer
    x = 3,990.33

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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.