Home / 8,438.81-11,645.66-4,661.90

Finding the Fourth Proportional to 8,438.81, 11,645.66 and 4,661.90

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Solution

The fourth proportional to 8,438.81, 11,645.66 and 4,661.90 is: 6,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,438.81 : 11,645.66 = 4,661.90 : x
  2. Step 2: Convert to fraction form
    8,438.81/11,645.66 = 4,661.90/x
  3. Step 3: Cross multiply
    8,438.81x = 11,645.66 × 4,661.90
  4. Step 4: Simplify right side
    8,438.81x = 54,290,943.12
  5. Step 5: Solve for x
    x = 54,290,943.12/8,438.81
  6. Step 6: Final answer
    x = 6,433.48

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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.