Home / 7,838.13-11,756.70-3,679.05

Finding the Fourth Proportional to 7,838.13, 11,756.70 and 3,679.05

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Solution

The fourth proportional to 7,838.13, 11,756.70 and 3,679.05 is: 5,518.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,838.13 : 11,756.70 = 3,679.05 : x
  2. Step 2: Convert to fraction form
    7,838.13/11,756.70 = 3,679.05/x
  3. Step 3: Cross multiply
    7,838.13x = 11,756.70 × 3,679.05
  4. Step 4: Simplify right side
    7,838.13x = 43,253,487.14
  5. Step 5: Solve for x
    x = 43,253,487.14/7,838.13
  6. Step 6: Final answer
    x = 5,518.34

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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.