Home / 2,130.82-3,177.53-1,972.06

Finding the Fourth Proportional to 2,130.82, 3,177.53 and 1,972.06

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Solution

The fourth proportional to 2,130.82, 3,177.53 and 1,972.06 is: 2,940.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.82 : 3,177.53 = 1,972.06 : x
  2. Step 2: Convert to fraction form
    2,130.82/3,177.53 = 1,972.06/x
  3. Step 3: Cross multiply
    2,130.82x = 3,177.53 × 1,972.06
  4. Step 4: Simplify right side
    2,130.82x = 6,266,279.81
  5. Step 5: Solve for x
    x = 6,266,279.81/2,130.82
  6. Step 6: Final answer
    x = 2,940.78

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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.