Home / 2,981.19-4,113.09-1,722.08

Finding the Fourth Proportional to 2,981.19, 4,113.09 and 1,722.08

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Solution

The fourth proportional to 2,981.19, 4,113.09 and 1,722.08 is: 2,375.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.19 : 4,113.09 = 1,722.08 : x
  2. Step 2: Convert to fraction form
    2,981.19/4,113.09 = 1,722.08/x
  3. Step 3: Cross multiply
    2,981.19x = 4,113.09 × 1,722.08
  4. Step 4: Simplify right side
    2,981.19x = 7,083,070.03
  5. Step 5: Solve for x
    x = 7,083,070.03/2,981.19
  6. Step 6: Final answer
    x = 2,375.92

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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.