Home / 2,121.03-3,165.94-1,972.47

Finding the Fourth Proportional to 2,121.03, 3,165.94 and 1,972.47

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Solution

The fourth proportional to 2,121.03, 3,165.94 and 1,972.47 is: 2,944.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.03 : 3,165.94 = 1,972.47 : x
  2. Step 2: Convert to fraction form
    2,121.03/3,165.94 = 1,972.47/x
  3. Step 3: Cross multiply
    2,121.03x = 3,165.94 × 1,972.47
  4. Step 4: Simplify right side
    2,121.03x = 6,244,721.67
  5. Step 5: Solve for x
    x = 6,244,721.67/2,121.03
  6. Step 6: Final answer
    x = 2,944.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.