Home / 7,740.76-11,612.79-2,195.80

Finding the Fourth Proportional to 7,740.76, 11,612.79 and 2,195.80

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Solution

The fourth proportional to 7,740.76, 11,612.79 and 2,195.80 is: 3,294.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,740.76 : 11,612.79 = 2,195.80 : x
  2. Step 2: Convert to fraction form
    7,740.76/11,612.79 = 2,195.80/x
  3. Step 3: Cross multiply
    7,740.76x = 11,612.79 × 2,195.80
  4. Step 4: Simplify right side
    7,740.76x = 25,499,364.28
  5. Step 5: Solve for x
    x = 25,499,364.28/7,740.76
  6. Step 6: Final answer
    x = 3,294.17

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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.