Home / 10,486.45-15,724.81-3,910.87

Finding the Fourth Proportional to 10,486.45, 15,724.81 and 3,910.87

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Solution

The fourth proportional to 10,486.45, 15,724.81 and 3,910.87 is: 5,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,486.45 : 15,724.81 = 3,910.87 : x
  2. Step 2: Convert to fraction form
    10,486.45/15,724.81 = 3,910.87/x
  3. Step 3: Cross multiply
    10,486.45x = 15,724.81 × 3,910.87
  4. Step 4: Simplify right side
    10,486.45x = 61,497,648.37
  5. Step 5: Solve for x
    x = 61,497,648.37/10,486.45
  6. Step 6: Final answer
    x = 5,864.49

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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.