Home / 8,685.32-13,028.58-3,491.20

Finding the Fourth Proportional to 8,685.32, 13,028.58 and 3,491.20

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Solution

The fourth proportional to 8,685.32, 13,028.58 and 3,491.20 is: 5,237.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.32 : 13,028.58 = 3,491.20 : x
  2. Step 2: Convert to fraction form
    8,685.32/13,028.58 = 3,491.20/x
  3. Step 3: Cross multiply
    8,685.32x = 13,028.58 × 3,491.20
  4. Step 4: Simplify right side
    8,685.32x = 45,485,378.50
  5. Step 5: Solve for x
    x = 45,485,378.50/8,685.32
  6. Step 6: Final answer
    x = 5,237.04

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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.