Home / 6,581.20-9,871.80-3,806.80

Finding the Fourth Proportional to 6,581.20, 9,871.80 and 3,806.80

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Solution

The fourth proportional to 6,581.20, 9,871.80 and 3,806.80 is: 5,710.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,581.20 : 9,871.80 = 3,806.80 : x
  2. Step 2: Convert to fraction form
    6,581.20/9,871.80 = 3,806.80/x
  3. Step 3: Cross multiply
    6,581.20x = 9,871.80 × 3,806.80
  4. Step 4: Simplify right side
    6,581.20x = 37,579,968.24
  5. Step 5: Solve for x
    x = 37,579,968.24/6,581.20
  6. Step 6: Final answer
    x = 5,710.20

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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.