Home / 2,172.52-3,251.40-1,307.44

Finding the Fourth Proportional to 2,172.52, 3,251.40 and 1,307.44

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Solution

The fourth proportional to 2,172.52, 3,251.40 and 1,307.44 is: 1,956.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.52 : 3,251.40 = 1,307.44 : x
  2. Step 2: Convert to fraction form
    2,172.52/3,251.40 = 1,307.44/x
  3. Step 3: Cross multiply
    2,172.52x = 3,251.40 × 1,307.44
  4. Step 4: Simplify right side
    2,172.52x = 4,251,010.42
  5. Step 5: Solve for x
    x = 4,251,010.42/2,172.52
  6. Step 6: Final answer
    x = 1,956.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.