Home / 7,983.10-11,980.08-2,788.96

Finding the Fourth Proportional to 7,983.10, 11,980.08 and 2,788.96

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Solution

The fourth proportional to 7,983.10, 11,980.08 and 2,788.96 is: 4,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,983.10 : 11,980.08 = 2,788.96 : x
  2. Step 2: Convert to fraction form
    7,983.10/11,980.08 = 2,788.96/x
  3. Step 3: Cross multiply
    7,983.10x = 11,980.08 × 2,788.96
  4. Step 4: Simplify right side
    7,983.10x = 33,411,963.92
  5. Step 5: Solve for x
    x = 33,411,963.92/7,983.10
  6. Step 6: Final answer
    x = 4,185.34

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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.