Home / 2,172.63-3,000.70-1,472.79

Finding the Fourth Proportional to 2,172.63, 3,000.70 and 1,472.79

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Solution

The fourth proportional to 2,172.63, 3,000.70 and 1,472.79 is: 2,034.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.63 : 3,000.70 = 1,472.79 : x
  2. Step 2: Convert to fraction form
    2,172.63/3,000.70 = 1,472.79/x
  3. Step 3: Cross multiply
    2,172.63x = 3,000.70 × 1,472.79
  4. Step 4: Simplify right side
    2,172.63x = 4,419,385.95
  5. Step 5: Solve for x
    x = 4,419,385.95/2,172.63
  6. Step 6: Final answer
    x = 2,034.12

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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.