Home / 8,485.08-12,725.79-2,638.50

Finding the Fourth Proportional to 8,485.08, 12,725.79 and 2,638.50

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Solution

The fourth proportional to 8,485.08, 12,725.79 and 2,638.50 is: 3,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.08 : 12,725.79 = 2,638.50 : x
  2. Step 2: Convert to fraction form
    8,485.08/12,725.79 = 2,638.50/x
  3. Step 3: Cross multiply
    8,485.08x = 12,725.79 × 2,638.50
  4. Step 4: Simplify right side
    8,485.08x = 33,576,996.92
  5. Step 5: Solve for x
    x = 33,576,996.92/8,485.08
  6. Step 6: Final answer
    x = 3,957.18

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1.5x scale

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.