Home / 6,321-8,719.98-4,081.80

Finding the Fourth Proportional to 6,321, 8,719.98 and 4,081.80

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Solution

The fourth proportional to 6,321, 8,719.98 and 4,081.80 is: 5,630.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,321 : 8,719.98 = 4,081.80 : x
  2. Step 2: Convert to fraction form
    6,321/8,719.98 = 4,081.80/x
  3. Step 3: Cross multiply
    6,321x = 8,719.98 × 4,081.80
  4. Step 4: Simplify right side
    6,321x = 35,593,214.36
  5. Step 5: Solve for x
    x = 35,593,214.36/6,321
  6. Step 6: Final answer
    x = 5,630.95

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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.