Home / 8,419.20-11,619.88-5,063.87

Finding the Fourth Proportional to 8,419.20, 11,619.88 and 5,063.87

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Solution

The fourth proportional to 8,419.20, 11,619.88 and 5,063.87 is: 6,988.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,419.20 : 11,619.88 = 5,063.87 : x
  2. Step 2: Convert to fraction form
    8,419.20/11,619.88 = 5,063.87/x
  3. Step 3: Cross multiply
    8,419.20x = 11,619.88 × 5,063.87
  4. Step 4: Simplify right side
    8,419.20x = 58,841,490.98
  5. Step 5: Solve for x
    x = 58,841,490.98/8,419.20
  6. Step 6: Final answer
    x = 6,988.96

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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.