Home / 7,986.85-11,985.95-2,792.77

Finding the Fourth Proportional to 7,986.85, 11,985.95 and 2,792.77

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Solution

The fourth proportional to 7,986.85, 11,985.95 and 2,792.77 is: 4,191.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.85 : 11,985.95 = 2,792.77 : x
  2. Step 2: Convert to fraction form
    7,986.85/11,985.95 = 2,792.77/x
  3. Step 3: Cross multiply
    7,986.85x = 11,985.95 × 2,792.77
  4. Step 4: Simplify right side
    7,986.85x = 33,474,001.58
  5. Step 5: Solve for x
    x = 33,474,001.58/7,986.85
  6. Step 6: Final answer
    x = 4,191.14

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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.