Home / 2,981.65-4,111.80-2,227.09

Finding the Fourth Proportional to 2,981.65, 4,111.80 and 2,227.09

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Solution

The fourth proportional to 2,981.65, 4,111.80 and 2,227.09 is: 3,071.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.65 : 4,111.80 = 2,227.09 : x
  2. Step 2: Convert to fraction form
    2,981.65/4,111.80 = 2,227.09/x
  3. Step 3: Cross multiply
    2,981.65x = 4,111.80 × 2,227.09
  4. Step 4: Simplify right side
    2,981.65x = 9,157,348.66
  5. Step 5: Solve for x
    x = 9,157,348.66/2,981.65
  6. Step 6: Final answer
    x = 3,071.24

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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.