Home / 8,137.10-12,209.70-4,629.80

Finding the Fourth Proportional to 8,137.10, 12,209.70 and 4,629.80

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Solution

The fourth proportional to 8,137.10, 12,209.70 and 4,629.80 is: 6,947.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,137.10 : 12,209.70 = 4,629.80 : x
  2. Step 2: Convert to fraction form
    8,137.10/12,209.70 = 4,629.80/x
  3. Step 3: Cross multiply
    8,137.10x = 12,209.70 × 4,629.80
  4. Step 4: Simplify right side
    8,137.10x = 56,528,469.06
  5. Step 5: Solve for x
    x = 56,528,469.06/8,137.10
  6. Step 6: Final answer
    x = 6,947.00

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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.