Home / 8,422.78-11,622.94-4,645.99

Finding the Fourth Proportional to 8,422.78, 11,622.94 and 4,645.99

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Solution

The fourth proportional to 8,422.78, 11,622.94 and 4,645.99 is: 6,411.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.78 : 11,622.94 = 4,645.99 : x
  2. Step 2: Convert to fraction form
    8,422.78/11,622.94 = 4,645.99/x
  3. Step 3: Cross multiply
    8,422.78x = 11,622.94 × 4,645.99
  4. Step 4: Simplify right side
    8,422.78x = 54,000,063.01
  5. Step 5: Solve for x
    x = 54,000,063.01/8,422.78
  6. Step 6: Final answer
    x = 6,411.19

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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.