Home / 8,685.13-13,028.30-3,491

Finding the Fourth Proportional to 8,685.13, 13,028.30 and 3,491

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Solution

The fourth proportional to 8,685.13, 13,028.30 and 3,491 is: 5,236.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,685.13 : 13,028.30 = 3,491 : x
  2. Step 2: Convert to fraction form
    8,685.13/13,028.30 = 3,491/x
  3. Step 3: Cross multiply
    8,685.13x = 13,028.30 × 3,491
  4. Step 4: Simplify right side
    8,685.13x = 45,481,795.30
  5. Step 5: Solve for x
    x = 45,481,795.30/8,685.13
  6. Step 6: Final answer
    x = 5,236.74

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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.