Home / 7,815.52-11,723.29-1,972.58

Finding the Fourth Proportional to 7,815.52, 11,723.29 and 1,972.58

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Solution

The fourth proportional to 7,815.52, 11,723.29 and 1,972.58 is: 2,958.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.52 : 11,723.29 = 1,972.58 : x
  2. Step 2: Convert to fraction form
    7,815.52/11,723.29 = 1,972.58/x
  3. Step 3: Cross multiply
    7,815.52x = 11,723.29 × 1,972.58
  4. Step 4: Simplify right side
    7,815.52x = 23,125,127.39
  5. Step 5: Solve for x
    x = 23,125,127.39/7,815.52
  6. Step 6: Final answer
    x = 2,958.87

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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.