Home / 4,811.89-6,643.47-3,929.80

Finding the Fourth Proportional to 4,811.89, 6,643.47 and 3,929.80

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Solution

The fourth proportional to 4,811.89, 6,643.47 and 3,929.80 is: 5,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,811.89 : 6,643.47 = 3,929.80 : x
  2. Step 2: Convert to fraction form
    4,811.89/6,643.47 = 3,929.80/x
  3. Step 3: Cross multiply
    4,811.89x = 6,643.47 × 3,929.80
  4. Step 4: Simplify right side
    4,811.89x = 26,107,508.41
  5. Step 5: Solve for x
    x = 26,107,508.41/4,811.89
  6. Step 6: Final answer
    x = 5,425.62

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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.