Home / 8,421.33-12,634.71-4,039.11

Finding the Fourth Proportional to 8,421.33, 12,634.71 and 4,039.11

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Solution

The fourth proportional to 8,421.33, 12,634.71 and 4,039.11 is: 6,059.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.33 : 12,634.71 = 4,039.11 : x
  2. Step 2: Convert to fraction form
    8,421.33/12,634.71 = 4,039.11/x
  3. Step 3: Cross multiply
    8,421.33x = 12,634.71 × 4,039.11
  4. Step 4: Simplify right side
    8,421.33x = 51,032,983.51
  5. Step 5: Solve for x
    x = 51,032,983.51/8,421.33
  6. Step 6: Final answer
    x = 6,059.97

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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.