Home / 7,113.45-9,816.54-3,926.66

Finding the Fourth Proportional to 7,113.45, 9,816.54 and 3,926.66

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Solution

The fourth proportional to 7,113.45, 9,816.54 and 3,926.66 is: 5,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.45 : 9,816.54 = 3,926.66 : x
  2. Step 2: Convert to fraction form
    7,113.45/9,816.54 = 3,926.66/x
  3. Step 3: Cross multiply
    7,113.45x = 9,816.54 × 3,926.66
  4. Step 4: Simplify right side
    7,113.45x = 38,546,228.45
  5. Step 5: Solve for x
    x = 38,546,228.45/7,113.45
  6. Step 6: Final answer
    x = 5,418.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.