Home / 2,172.87-2,996.73-1,872.36

Finding the Fourth Proportional to 2,172.87, 2,996.73 and 1,872.36

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Solution

The fourth proportional to 2,172.87, 2,996.73 and 1,872.36 is: 2,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.87 : 2,996.73 = 1,872.36 : x
  2. Step 2: Convert to fraction form
    2,172.87/2,996.73 = 1,872.36/x
  3. Step 3: Cross multiply
    2,172.87x = 2,996.73 × 1,872.36
  4. Step 4: Simplify right side
    2,172.87x = 5,610,957.38
  5. Step 5: Solve for x
    x = 5,610,957.38/2,172.87
  6. Step 6: Final answer
    x = 2,582.28

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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.