Home / 7,977.77-11,972.13-2,783.65

Finding the Fourth Proportional to 7,977.77, 11,972.13 and 2,783.65

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Solution

The fourth proportional to 7,977.77, 11,972.13 and 2,783.65 is: 4,177.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,977.77 : 11,972.13 = 2,783.65 : x
  2. Step 2: Convert to fraction form
    7,977.77/11,972.13 = 2,783.65/x
  3. Step 3: Cross multiply
    7,977.77x = 11,972.13 × 2,783.65
  4. Step 4: Simplify right side
    7,977.77x = 33,326,189.74
  5. Step 5: Solve for x
    x = 33,326,189.74/7,977.77
  6. Step 6: Final answer
    x = 4,177.38

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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.