Home / 7,981.59-11,972.49-3,051.72

Finding the Fourth Proportional to 7,981.59, 11,972.49 and 3,051.72

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Solution

The fourth proportional to 7,981.59, 11,972.49 and 3,051.72 is: 4,577.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.59 : 11,972.49 = 3,051.72 : x
  2. Step 2: Convert to fraction form
    7,981.59/11,972.49 = 3,051.72/x
  3. Step 3: Cross multiply
    7,981.59x = 11,972.49 × 3,051.72
  4. Step 4: Simplify right side
    7,981.59x = 36,536,687.18
  5. Step 5: Solve for x
    x = 36,536,687.18/7,981.59
  6. Step 6: Final answer
    x = 4,577.62

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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.