Home / 7,981.72-11,977.54-3,051.86

Finding the Fourth Proportional to 7,981.72, 11,977.54 and 3,051.86

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Solution

The fourth proportional to 7,981.72, 11,977.54 and 3,051.86 is: 4,579.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,981.72 : 11,977.54 = 3,051.86 : x
  2. Step 2: Convert to fraction form
    7,981.72/11,977.54 = 3,051.86/x
  3. Step 3: Cross multiply
    7,981.72x = 11,977.54 × 3,051.86
  4. Step 4: Simplify right side
    7,981.72x = 36,553,707.71
  5. Step 5: Solve for x
    x = 36,553,707.71/7,981.72
  6. Step 6: Final answer
    x = 4,579.68

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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.