Home / 7,981.62-11,972.55-3,051.51

Finding the Fourth Proportional to 7,981.62, 11,972.55 and 3,051.51

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Solution

The fourth proportional to 7,981.62, 11,972.55 and 3,051.51 is: 4,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.62 : 11,972.55 = 3,051.51 : x
  2. Step 2: Convert to fraction form
    7,981.62/11,972.55 = 3,051.51/x
  3. Step 3: Cross multiply
    7,981.62x = 11,972.55 × 3,051.51
  4. Step 4: Simplify right side
    7,981.62x = 36,534,356.05
  5. Step 5: Solve for x
    x = 36,534,356.05/7,981.62
  6. Step 6: Final answer
    x = 4,577.31

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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.