Home / 8,687.03-13,022.82-3,139.16

Finding the Fourth Proportional to 8,687.03, 13,022.82 and 3,139.16

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Solution

The fourth proportional to 8,687.03, 13,022.82 and 3,139.16 is: 4,705.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,687.03 : 13,022.82 = 3,139.16 : x
  2. Step 2: Convert to fraction form
    8,687.03/13,022.82 = 3,139.16/x
  3. Step 3: Cross multiply
    8,687.03x = 13,022.82 × 3,139.16
  4. Step 4: Simplify right side
    8,687.03x = 40,880,715.63
  5. Step 5: Solve for x
    x = 40,880,715.63/8,687.03
  6. Step 6: Final answer
    x = 4,705.95

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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.